Wow this is fantastic news, Lady Lee!
My grandmother uses one of those Rascal chairs because she just can't walk very far without wanting to fall over and croak...the chair gives her the freedom she needs as well, to go grocery shopping and the mall, etc. However, she won't listen to the speed limits...she always would crank that cart up to 10. She was dangerous! Well...she went with myself and husband on our honeymoon (there were 43 people total sailing on our cruise.) and she went tooling around Nassau with her cart up to 10. Well, she lost control, careened across the street (narrowly missing becoming a pancake on front of a van) and smashed into the curb, destroying the thing. She has been wheelie-less ever since and is really down too.
I just want to say, you have the right attitude. Living in agony is not living. If you can live a meaningful, 'normal' life while using the chair versus walking around in agony and having to be drugged up and basically invalid...well I don't see what the big decision is here. Enjoy your new wheels! Congratulations!