easy to work on mopeds. if you know bikes and you know cars and your friend knows motorcycles you wont have too hard of a time figuring it out. looks like youre going to be ok since you havent cheaped out i can tell as youre cleaning the gas tank which saves a world of trouble. that engine kitted will give you so much torque and speed its not funny. a friend dan sabat (also a khz) threw a reed valve athena kit on that bike and it flew without even being portmatched.
the rims tend to peel so id get it painted or powdercoated along with the bike. i dunno what youre going for but you can do anything from making it a stock cruiser or a souped up speed demon but that bike will be easy to find parts and mopedarmy is definitely the primary source of your future knowlege in mopeds