
The North Face
Wawona 6
Spacious vestibule, strong in storms, but rainfly tricky solo.

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Kelty all day every day in that price range. Discovery Element 4 and it's footprint is well under budget and gets you to a little more comfortable size for storing your gear. If you're backpacking or otherwise prioritizing size/weight the Discovery Trail 2 or Grand Mesa 2 would work as well.
https://www.steepandcheap.com/kelty-discovery-element-4-tent-4-person-3-season I have this tent. A pole did snap but Kelty warranty replaced it. I think it may have been a fluke, there was 4 straight days of rain. I had a mishap with it (my fault this time) so I just replaced it for $80 shipped. Most of our scouts have Kelty tents. We're in the southeast. Nothing wrong with Coleman either though. Perhaps better for you actually. They dont have a full rainfly so you'll get more condensation on that single wall - not a huge issue. They're pretty bullet proof though and the thick tent floor is nice, no need for a footprint tarp.
Where do you camp, what is the weather like? Generally Kelty or Alps Mountaineerimg tents are the budget tents that are a step up from Coleman. Two layer (separate body and rainfly) are most forgiving. Full rainfly (covers the whole body) is best. More mesh in the body for hot and humid. Less mesh for colder climates.
Yeah the marketing is so bad. There are 3 season tents that are better suited for colder climates but they aren't advertised like that. So weird. In the south, I recommend Kelty tents a lot because their 2 layer tents have almost-full mesh bodies. I notice that people in the northern US swear by Alps Mountaineering tents... their bodies happen to have a lot less mesh in the body. They're like 3.5 season tents, lol (but they'd be bad in the south).
I have the kelty Discovery Element and like it. We camped in 20 campgrounds this summer so we had a lot of set up/take down and I have no complaints!
I have a kelty discovery element that we took down every day on a road trip this summer and it was the least painful part of setting up/breaking down. Color coded so you know what goes where, two poles, shark mouth bag so you can just jam it back in. Up/down in just a couple of minutes, after spending one zillion minutes deflating pads and squeezing them small again.
I have a great easy to set up kelty discovery element tent that's a pretty teal, and have a women's sleeping bag from them too in a similar color way. I spent all summer in both and am happy with them.
For budget, I love my kelty discovery element tent. It takes less than 5 mins to setup, everything is color coded.
How long is a long trip, and what are the concerns of failing? Most tents can last a good long time without issue. Make sure you are thinking about takedown time as well, just because it's fast up doesn't mean it'll be fast down as well. We did a month last summer plus a bunch of weekends in a Kelty tent, which I could set up and take down on my own in under 5 mins. Two poles, color coded, didn't cost me one zillion dollars, easy to get back into the bag without folding it perfectly. I think you're overthinking this.
Also kelty tents come in these great shark mouth bags so you can jam the tent back in without perfectly folding it to fit.
REI has a kelty pack that comes with a kelty 4 person tent, 2 sleeping pad, and 2 sleeping bags. It is around 300 I think. At least in the US. I've used it for years and it's a good tent. The sleeping bags are fine for the summer. You may want a nicer sleeping pad, but it will work until you get something nicer.
You're safe! I have similar tents... My fave is my first Kelty dome tent. I won't tell you how old it is, but it's small, waterproof, and a breeze to set up. I also have a Kelty 6 wireless, a Gazelle 3t, a coleman that I've never even set up, a 2 person random cheap tent that I have used twice, and another little dome tent that I have no idea where it came from. And, I'm still looking. I have issues.
How tall is the air mattress? What time of year do you want to go and how many people will help with set up? I’m in middle TN and really only fall and spring are where storms are less unpredictable. Sounds like you are perfect for a larger tent from Walmart like a Coleman. An REI/kelty dome tent is also a good option if your air mattress is not very tall. Get something cheaper to figure out what you do and don’t like/need.
A dome tent should work just fine at that height. They are easy to set up solo and don’t break the bank. I would advise looking into the Coleman tents since they are cheaper and normally a bit bigger but I have spent many nights in a kelty dome tent. Look into the exact set up for the rain fly on staking it out, that will help if there is a storm forecasted. When going on tent size know that if it says 3 people that means 2 people can be comfortable and 3 people need to be super close so always go down 1 person vs what the tent actually says.

The North Face
Wawona 6
Spacious vestibule, strong in storms, but rainfly tricky solo.

Gazelle Tents
T4 Hub Tent Series
Fastest setup, durable, but bulky and awkward door.

Durston
X-Mid 2
Ultralight, spacious 2P, but not for very strong winds.

Durston
X-Mid 1
Budget ultralight 1P, spacious, but large footprint.

Naturehike
Mongar 2 Backpack Tent (Nylon)
Budget 2P, spacious for price, but not for 4 seasons.

Ranked #1
Durston - X-Mid 2

Ranked #1
Gazelle Tents - T4 Hub Tent Series

Ranked #1
Gazelle Tents - T4 Hub Tent Series

Ranked #1
Durston - X-Mid 2

Ranked #1
Durston - X-Mid 2

Ranked #1
SlingFin - Portal 2