I think it depends what your goals are. If you're trying to gain size I'd run whatever still works for you. Since you usually cycle 650/wk I'd stay at that and not go above it. If it were me I'd just stop in a few weeks and save it for my next cycle. But if you're dead set on staying on that's cool too. If you're already at a size you can't complain about and you have a crapload of the stuff and you're dying to use it you could always just go low and keep your pump until the next cycle. My advice is definitely don't up your dose past what already works for you. You'll have to do that in future cycles anyway so why build your tolerance early in the first place. 10 weeks is a long time for you to plan on staying on much longer. If that's your decision I support it- my personal philosophy is stay on a cycle until you hit your goal for that cycle whatever that is. But I hope you're prepared to do some hardcore pct and stay off for a looong time when you're done. Are you running HCG? If not, I think you should if you're planning to stay on for a long while. Good luck bro.