as stated before thick air foil are floaters.

a taildrager, semi symetrical with straigth wing cord will be a great
second tool. stay away from tappered LE edge wings for the moment.
something that can be easily repair.

you're on the correct track. A computer radio is a good investment.
get a brand that will be compatiable with your current radio.
i don't belive JR and futaba are compatiale.

i luv my 4* .60. it can be frame up in a weekend or less.
i bash it of course..extended rudder, clippwings, less diehedral.
it'll still float like a trainner...on low rates
cuts thru the wind better than .40 size
a great workhorse that can handle anything i throw at it
but god o mighty....5 flights = 1 gallon