Seems like you have a pretty good handle on most things to me. I would be tempted to go for a lower turn motor if you've raced before, even though a long time ago.
If you decide to try a wheel radio there are some that can be configured for left or right hand which may be worth looking at - sanwa, spektrum and others possibly.
You have a few options for shock protectors
- buy a universal one from the club for a few pounds, drill some holes and fit
- make from the bottom of a drinks bottle -
http://www.rctech.net/forum/nitro-of...er-covers.html
- make from a spare lexan rear wing. I find these last best