hi,
back when I needed a chair, I found that most clubs: Moose, Elks, American Legions, etc, all have wheelchairs that they will let you use for free, I'd give them all a call as you cant beat the price.

I cant say whether or not using a chair is a good thing or not, I mean yes I did and it did help but then again I became so reliant on it that after I did get a treatment that worked, it took me over a year to relearn to walk again. I guess there are pros and cons with everything and I do wish you the best.

take care