Stay at TH9... You'll end up skipping hundreds of times more per day at TH10 than you do now. Sounds extra frustrating to me lol
Plus I'm sure you want to do the lavas eventually, might as well complete them now.
Edit: I find it comical that everyone with low level walls are telling you to move on to TH10, where as everyone with decent walls are telling you to stay. That's telling you something OP. Of course you can do them at TH10, but it'll take much longer and will require much more work.

