I'm not familiar with the frequency laws in the USA so i'll leave most of the Q's to some one else but for a durable 25 size trainer have a look at the BUHOR on www.spadtothebone.com

oops sorry missed the bit where you sold all the gear, for electric i've flown the pico stick and it's nice and slow, you should be able to get a package from your hobby shop that includes the stick, servos, reciever, esc and battery but be warned if it's like Australia electrics ar NOT cheap and it may be cheaper to go the glow engine way.

any way have a look at the SPAD site as some of the guys build electrics and can probably point you in the right direction