Man - you're tougher than I am!
My favorite formula is 8yrs as Representative, 12yrs as Senator... I really don't care too much exactly the number of terms, more that it be limited.
I like my plan better because you know where they go after they get tossed out of there, don't you? They just head for the nearest lobbying firm. This way, if we churn them out faster, there is NO way the lobbying firms can swallow that many employees.