look for some good used carbs, or you're gonna have leaks for life. there are epoxies that will bond, but you'll never get 100% seal.

as far as the remote, make sure you wire in a ground spring, i've seen remote started bikes start in gear, and it ain't pretty. remote start works better on an fi bike than it does on a carbed bike (unless the carbed bike is already warmed up) not something i would do, but, to each thier own.

if you wire it so the kickstand switch still works with the alarm, you should be safe.