KeyFit 30

We have the Chicco Keyfit 30 bucket seat and have been very happy with it! We have an adaptor that clicks onto our Uppababy stroller and it’s super convenient for quickly running into the store, etc.

Chico keyfit30. Such an easy install compared to other car seats I’ve used and so much easier than the really fancy expensive ones I’ve helped other people set up and install.

Gonna have to disagree with you on that one. According to google the doona is 17.2 pounds, the Chicco key fit 30 without the base (only the part you’d take out of the car) is 9.5 pounds

 I personally don't recommend starting with a convertible car seat just because in my experience they dont fit newborns/small babies well. Even my high percentile 4 month old felt too small and didn't have the neck control for the extend2fit when we tried to switch at 4 month and didn't fit well until closer to 6. If you do go that route the only one that would probably be okay is the cosco next from what I've read from CPST. Even though its convertible though it only works rear facing and baby will probably out grow it around 2 year old and you'll have to get a second seat. I think the Cleks convertible also fit newborns well, but they're very big back to front so I'm not sure it'll fit your car tbh.  We have a Kia Soul and got the chicco key fit 30. It worked pretty well and we used it a similar amount (or even less tbh) than you plan to. We ended getting a travel stroller that was compatible with it to leave in the car instead of our big stroller. Like everyone said the Graco and Clek Lling would work as well. I will say I think I wish I had gone with the Lling instead but it just seemed too expensive for a seat my son outgrew by 7 month. 

I like my Keyfit30. It's about 11 pounds, which I've heard is not on the heavier side? It's kinda bulky like many infant carriers. But my baby seems very comfy in it.

We’ve been very happy with the Chicco key fit 30 travel system. I will say I do eventually want to upgrade to a turn to me style car seat. We utilize the travel system stroller and a Thule jogging stroller with car seat bar attachment. The jogging stroller is massive by comparison and would take up way too much space in most stores, but is phenomenal in the way it glides. We live in a very hilly, rural, area, so it was must. I include all of that to say that by comparison the keyfit stroller doesn’t really glide, it’s definitely like pushing a stroller. Both the travel system and the jogging stroller were gifts, so I’m not sure on cost. The keyfit stroller is super easy to collapse and open. It fits really well in the “trunk area” of my mid sized SUV.

Ngl, if it’s not a pumpkin seat, I’d probably get one. The extend 2 fit is great once they outgrow the infant pumpkin seat but early days, the infant seat is king. Most kids outgrow the infant seat by 9-10 months. If you want a great brand, check out Chicco key fit 30. That and the graco snug ride are the two I see most often recommended for affordable and safe.