GP RV-4 for 2nd plane?
A lot depends on your progress....you say you are doing pretty good, but how will be in 3 months (building time for 'normal' building a kit) if you crash tomorrow?
I fly the RV-4 by GP and love it - powered by an OS .52 so it is not overpowered. Has flaps, cool effect....great plane.
I would hate to see you dump a plane that took that long to build - I'd opt for a Stik of some kind for your next plane and while you are flying that, start building the RV-4.
You will also need 5 servos for the GP RV-4.....and a 6 channel+ radio.
Jerry