ORIGINAL: hebertjj
I agree with Dennis's first admonition to find a club and instructor. Buddy box technology has really improved the learning curve since the "grab for the box" days of instruction. Since you've got 3 Futaba Transmitters, get a buddy cord of your own and you'll be ready to go without scrounging around at the field for a cord/Tx loan.
http://www2.towerhobbies.com/cgi-bin...?&I=LXH466&P=7
I don't know anything about the Megatech trainer; is it a 4 ch, aileron plane? If not, start with the SuperStar (which I am familiar with and incidentally, I believe you can get a replacement wing for). The SuperStar is a stable flyer, somewhat of a floater, that will give you some reaction time to correct mistakes. Put the OS .46 on it with a Master Airscrew 11x6 prop (it's tougher than most others) and you have a great combination. The OS .46FX is a powerful and user friendly engine that will let you spend time flying and not tinkering with the engine. I'm not sure I'd pick my first plane by deciding which one's the worst. With a buddy box and instructor, a good trainer plane has a good chance of lasting a season, so use the plane that will keep you flying and learning the most.
All your Tx and Rx are suitable for the planes you have, except maybe the 1/12 109 which may require the Hitec 555 Rx, due to size restrictions. However the 555 is a great, full range, rx and will work fine in any of those planes. The Hitec 81 servoes are minis and the 60s are micros and not suitable for use in any of the planes except the 81s in the 109. Also, how old are your batteries? If they've been sitting around for a couple of years or more, I'd pitch them and get new replacements. A lot cheaper than a bad battery caused crash. Have any of the Rx been in a crash? If so, send them back to the manufacturer for a check up.
Finally, quit buying stuff before you need it !!! By the time you get around to using it, it's not the latest and greatest. Do you want to collect R/C stuff, or fly R/C? Fly the wings off those trainers and get comfortable with them, then get a low wing trainer like a Kaos and wear it out. Then maybe you'll be ready for a Giles of Me109.