I would would build a SPA3DT........it's an awesome 3D trainer and it cost about $12 bucks to build. I built my first one in an hour and I have three. You can find plans at www.spadtothebone.com. I power mine with Super Tigre .51's and I use 12.25x3.75 APC and MAS 11x4-11x7.......depending on availability. I also quickly advanced from glow trainer to 3D and am just lovin' it! Good luck and "hang" in there!
XS