Beta or GG 80's are not always easy to find when you want one. In good shape they go for surprisingly big bucks - GG's are $4700+ new! They are both capable little bikes, but are definitely revy little zingers. If you fit on them, then I say there not a bad choice. My buddy rides his sons GG80 up some impressive stuff. (but its hard to do)
I know you said no theory, but I was never any good at following directions:
If your small and have physical limitations that make kick starting a risky proposition, I would certainly take a look at the new OSET 20 coming out next spring. 100% electric (no Kick Starting!) and super light (80 lbs! with the stock batteries - with the potential to drop another 10 lbs using $$ batteries) I can tell you this - it will have PLENTY of power for 120lbs of rider on a full charge at a bike weigh of almost 1/2 a Beta 80!