Yeah,don't ride it faster than your guardian angel can fly!
Seriously though,there will be a learning curve with that thing so take your time getting the hang of riding it and when you start feeling a little confident
rein yourself in and take getting on it in baby steps until you get a feel for all that power and what it can do.

 

I'd buy it. Especially if you know the people who built it as they could tell you the history of the bike. Sure you won't get your money back but I would bet it would cost you probably twice that if you built something like that yourself just in parts. So, if that's the one you want than $8k is probably a great price.

 

Those cylinder fins remind me of the *** 049 engines in my planes & buggies