I ended up choosing the Chicco Keyfit 30 travel system. The choice was based on the model having the most features that could be used with one hand, and the ability to rest the carseat on the wheelchair armrest (with support). This is not a light carseat, and with a baby in it, it’s darn heavy. But I *can* use all the features (not easy, but possible).
It seemed that lengthening the straps would require two hands. That is, until I figured out I can push that front orange button with her thumb, and reach underneath with the rest of my hand to pull the straps from the bottom. Here’s a video to illustrate:
Here are some photos of me getting my son out of our van in his carseat from the base onto the wheelchair armrest:
Here is the stroller that came with the travel system. It works great, but it’s really big!
I eventually found this one which my carseat snaps right into and it’s much more compact! (Yay for spending more money!)
Notice how the handle is one piece instead of two like many strollers have. Here we are using the stroller:
(I am very serious about shopping at Target)
Here is how I push the stroller from my chair.
All in all, we are very happy with this system (Of course, it’s the only one we’ve used).
Now that little sister is here, mommy has discovered a new trick – wedging the carseat between the footrests, for which she never had a use for before!
Overall, my best recommendation is to go to the stores and try out all the options. Ask the staff to get the models down from the shelf so you can try them out, assembled in the store. You may find you don’t need or want a stroller or travel system after all. What works for one person may not for another. As long as is works, embrace it! Happy Travels!