I say no. Its hard for a starter th9 to get loot (from my experience) right now. I say max the walls and DE troops.
Clan ID #9RRC2QCL l My ID #LQY8L9YO l Level 100
Elite Bombers recruitment page
"Fools learn from experience, wise learn from history."
No hurry to nine, get your gobs up, you're going to need them.
Go for it.
Skull walls aren't important, they fall just as easily as level 7 walls. The game is arguably at its most interesting at TH9.
I would stay and max until hopefully the loot issue is resolved. Post-update clash ain't kind to a fresh th9.