I really don't think any of the planes on your list are best just coming off a trainer. Their all good planes, I especially like the Somthin Extra and Super Sportster, just maybe a bit much for a second plane.

Also, none of the planes you listed are really good for 3D flight except possibly the Fun-51. Even then, it is more of a fun-fly plane than a real 3D aircraft. You want some experience on a good low-wing sport aircraft before getting into hardcore aerobatics and 3D anyhow.

A good list of trainer and intermediate planes can be found here: http://www.rcuniverse.com/forum/m_4537845/tm.htm

If you want to build a kit, I highly recommend the Great Planes Rapture: http://www3.towerhobbies.com/cgi-bin...?&I=LXFHG4&P=7

You could explore 3D with your 3rd plane. For that, I would recommend a profile such as the OMP Edge-540 or the Mojo. Both are true 3D planes.

As for the radio, the one you currently have will be fine for for your second plane so there's no need to replace it right away unless you absolutely just want to. When you do eventually decide to step up, go for a 2.4Ghz.