It's good that you're bringing as much loot into TH9 as possible. I did the same thing. Get new buildings built, including X-Bows. Make sure you dedicate 2 builders to the lab and spell factory right away. And get the Archer Queen. She's a game-changer. 10x better than the Barb King. Get her to level 5 as fast as you can.
After that, upgrade your army camps as soon as you can. They are much more important than upgrading the new defenses.
Then I would recommend upgrading your clan castle, since it adds to your offense as well as your defense.
Then, if your clan wars a lot, start by upgrading your new air defense to level 6. If you're more concerned about protecting your loot, upgrade your new wizard tower to level 6 first. Then point defenses last.
Once everything is up to TH8 max, do mortars and wizard towers to level 7. They will help defend against level 7 giants and barch quite a bit. Trust me, if you have a lot of loot, you will get hit hard with those.
Then I'd max X-Bows. After that, do whatever you see fit.
Good luck and have fun at TH9!
