837.5 doesn't look wrong to me.
The only thing I might add is always...always...expect price to retrace back to the line it just broke. It won't always do it but it does it often enough that you should always expect that it will and plan accordingly. Maybe this is a place you pull your stops a little tighter to take more of your money off the table. Maybe you buy back two at first instead of one and just leave the one hanging to 383??
Just some thoughts.
I think the general consensus here use to be, along with "use stops", don't give back more than half of what you made. You gave back a little more than that but not much. All in all a decent trade in my book.
If you're unhappy with it...send the money to me and I'll be happy with it for you. :-))