I'll put in my vote for the Somethin' Extra. Very easy build, but a bit tight in some areas. If you're thinking something a bit larger, take a look at an Astro-Hog. I put one together close to 15 years ago, a very good Kit. Others you might consider, any of the 'stik' models (if you can find a kit), a profile like a MOJO or similar, or if you're feeling real adventurous, simply grab some plans of one of the 'stik' models, get the wood, cut out the parts to make your own kit and have at it! Just take your time, working out the details before you start sticking stuff together! Above all, don't get in a rush, or you'll have problems for sure. If you do run into a problem or mistake, just cut it out, make some new parts, and pick back up where you left off.

Good Luck!