I wouldn't try talking you out of buying an Avistar Elite to fly while you're getting your thumbs back, particularly if you know you'll have good instructor help on a buddy box while you're getting back into the swing of things. The Tower Hobbies trainer ARF at $99 is a wonderful alternative to consider, however. If you want a true 4-channel primary trainer that will fly nice and slow, the Tower Trainer ARF is a bargain. If you aren't afraid to fly something a little quicker, then go ahead and start with the Avistar Elite. They're both really nice flying planes and there is no wrong choice.
The Sig Kadet LT 40 ARF is also a wonderful choice; at $199.99 it is up to the individual pilot to decide whether or not it is worth the cost of two Tower Hobbies Trainer 40 ARFs. Most pilots who've owned the LT-40 would say that it is.
Good luck and good shopping!