Thank you everyone for advice and input! I'm gonna go with a snap-tite kit and let him pick it out. We don't have any decent hobby shops locally so I'll take him down to hobby lobby and see if there is something that peeks his interest. If not I'll look into ordering him something online.
I really like the sound of the 1/72 tanks because I play that game World of Tanks, but he also likes Star Wars as well. Who knows I'll let him pick and sit with him while he builds it and help him.
I got my first when I around 7 as well and I remember to this day it looked like a train wreck when I was done with it. It was the Red Barons bi-plane but it wasn't snap-tite.
Thank you all again, I'll let you know how it turns out and post some pics.