I'm not sure wha the AME stuff is that you are trained in (and Im too lazy to look it up plus I just graduated POET and decided to jump in here for some insane reason), but here's the long and shot of each trade :
AVS - Avionics Systems Technician - electronics
AVN - Avation Systems Technician - engines / weapons
ACS - Aircraft Structures Technician - bodywork
When I was in Greenwood for a few months, and from other's experiences, AVN and ACS works alot more than AVS techs, but oh boy when they work they WORK.
If I were you I'd pick what your interested in and would be a suitable career because I'll tell you now, no matter how much cash you earn if you dont like what you do than every minute up to retirement will be spent hating what you do and dreading going into work because it sucks.