The clutch can last a very long time....provided you use an oil that is safe for wet clutches (no moly or other friction modifiers).

The cam chain issue is a very personal thing, and it seems to be affected by riding style.....short rides result in the tensioner coming apart in 10,000 miles or less - long rides can make it go well beyond 20,000.  You just need to take it apart and inspect it a time or two - and get some idea how fast yours is moving.  A modified tensioner can allow the cam chain to last twice as long - the chain is not beyond the wear limits when the tensioner runs out of adjustment.

I plan on buying one from you verslagen1, i just want to make sure i do everything properly the first time. i have no idea what ill be getting into once i open it up and how bad it could be. im not sure if my clutch is slipping or its bogging down when i ride but it doing something funny, ill update you later on what my motorhead buddy has to say after he rides it. im new to bikes but i know a bit about cars. any idea or advice guys?