Cables should be ok, at least I'm pretty sure they should. You should be able to find 500 specific parts or at least confirm compatibility.
Just a top end rebuild? Did you put lube on the cam etc. when assembling it? Will likely take more oil than during a typical change - manual should specify. Double check torque on head and all bolts are tight, oil in, squirt some engine oil in the tappet covers if you like to pre-lube the top end and you should be good to go.