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

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I have the Bunkhouse4. It is awesome and is absolutely palatial as a single man. Easy to set up solo as well. The rain fly is bomber but limits the ventilation slightly. You'll appreciate it on heavy rain days. I got it on sale for ~$400. Extremely awesome value at that kind of discount.
The 4 is probably the one for you. You'd be absolutely swimming in the 6. The 4 is 90"x92" for the interior floor. In my mind if you put two cots together and a double mattress you might eat up too much of the center of the tent. You would have room in there but it would be towards one side, where the ceiling height is lower. I feel like it would be taking too much of the valued high-ceiling real estate where you get to stand up to change clothes. How wide is the mattress? How tall are you and the lady?
>big agnes bunk house 6 I have the 4 and I have no regrets about purchasing it.
The Big Agnes Bunk House is solid ime. I've used the 4 person version and it's got great headroom, easy setup, and packs down smaller than the Gazelle. The Nemo Aurora is similarly nice, slightly different design but same idea.
We have a big Agnes bunk house (4person) for our family of 4. Heaps of room inside, great headroom, plenty of storage in front and rear vestibules. And the fly can be used independently from the tent as a shade or beach shelter. Highly rate it
Big Agnes 4 person tent is great! Bunk house 4 I think its called. It should fit right in your budget, relatively Compact and smaller than something like the T4 Gazzele's (I have one of them too). We winter camp in the Big A as well. We use it for 2 of us with PLENTY of usable room inside. Has a really nice, long rain fly, vestibule front and back, interior pockets and good ventilation. Highly recommended!
Bunk house is awesome, sturdy, roomy, ventilates well and can stand up to strong winds and downpour. It takes about 15 minutes to setup with two people. We have a 6p. It is heavy though, I hope you aren't planning to hike with it. As for the snowpeak while I have no experience with that tent I've never seen anything bad from snow peak. Their products quality is top notch. If you trying to be mobile I'm not sure tents this big are a good choice. Copper spur can be setup in 2 minutes and they have a 5p version
I have the Bunkhouse 6. I love it, it is very well made, and it vents extremely well with both the front and back open. The vestibule is insane - I keep my stuff in the vestibule in ALCs and have room for a camping chair on the opposite side. My single complaint is the lack of storage and accessories - poles to support the vestibule awning, footprint, and gear lofts or soft bins should be purchased as well. I bring it solo as a small (5'2") female of pitiful upper body strength, and I don't have issues with carrying it a half mile in and setting it up myself in less than ten minutes. Congratulations on your baby! My daughter had her first camping trip in the bh6 at 3 months. When my husband and I were laying in our full sized Lost Horizon bed with her Uppababy bassinet on the floor next to us, we had a whole twin bed worth of space left in the tent for a chair to feed her in and parked her massive off road stroller in the vestibule with room to spare. It's awesome and I baby the crap out of mine so it will last - no shoes, hard objects, or outside layers ever come in and there's no need with the vestibule.

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
The North Face - Wawona 6

Ranked #1
SlingFin - Portal 2