Any of the radios mentioned would be fine, but also look at the Futaba 6EXA. Good introductory computer radio, priced well. (So one at a hobby shop yesterday for $180 complete.)

Engines have not changed much in the past 5 years, so if you're looking to save a few bucks, use one of the ones you have. If you have money burning a hole in your pocket, then YES, check the specs on some of the opposed twins, it would look great and sound terrific! Saito and OS both make opposed twins that should work.

Forget the digital servos. They're expensive, suck up the mAH's on a battery pack, and aren't worth using unless you're going to be flying a 3D plane that requires precise throws ASAP.

Most of all, welcome back to RC, AND to RCU!
Dennis-