800 pounds would be the Gross Vehicle Weight, not the amount of stuff you can load onto it. If you weigh 200 pounds, then you would have about 200 pounds left that you could put on the bike. Not that I can recommend that. Sounds too heavy for the engine to me.
BUT, I'm a newb on this type of machine, so don't listen too closely to what I'm saying!
De inimico non loquaris sed cogites