Re: Bite the bullet
Steel Gary Fisher is a good choice for a first build. Everything should fit well with some tinkering. It's also light; probably under 30 lbs.
I used a bicycle chain tool on my mo-bike chain. It was a pain in the butt because it didn't fit that well, but I was able to shorten the chain for a better fit.
There is an an installation manual for Chinese motors posted on this site. Click around until you find it.
The easiest way to build your bike is with a chum that has built one himself. (Beer should attract one). The rest of us have to rely on help from the erudite members of this forum, as I did. Cheers
“You're only young once, but you can be immature as long as you like" -Unknown