Also, check out the Kit Building forum. The people who hang out in there may know of good "beginner builder" kits, as well as kits that are already electric or good subjects for conversions from glow to electric. Again, not chasing you off, but you may get better help in other forums that are more specific to your questions.

I have a personal recommendation though. Check out the Great Planes Spectra motorglider:
http://www.electrifly.com/largeelectrics/gpma0540.html <---this page only mentions the ARF and RTF, but there is a kit also.

It was my first kit build, and I built it completely stock. Even stock, it flew quite well, and was able to get my first slope lift and catch my first thermal. It is however, a bit outdated in terms of the electric set-up, if they ahvent updated it. It comes with a 540 size brushed motor, but the set-up consists of a fuse, and servo-activated throttle switch. In other words, they made no provisions for an ESC; it required a seperate reciever battery pack. [&:] If I were to build another Spectra (which is a good possibility because I liked its design a lot, and I wrecked mine a little too early in its life...), I would go for a brushless motor, with appropriate sized ESC and Li-Po battery. I would also use a small reciever, and mini metal-geared servos, and even modify it for ailerons. Hmmm....I'm starting to convince myself of a new project....

Or, theres also the GP Electric Piper Cub: http://www.electrifly.com/largeelectrics/gpma0156.html