We have our reversal signal, golden cross on weekly EMAs (10/21) is also incoming. A basic retrace would suggest a $560 target based on the fib level. I would also take some profits at the first fib level ($350) just incase. But other than that, I would say risk reward is decent here, a potential 100% profit. As for the stops, this is highly subjective. If it is too tight, you might get wiped out on the pullback, if it is too loose, you may end up risking a lot of money. I've been holding since the bottom, so am just watching for changes in fundamentals. As long as the fundamentals don't change, I will keep holding.
For those who are nervous, I would suggest buying after a pullback.