With early focus in TH8 being dragons which is carried over from TH7, I would probably go:
- level 4 hogs then;
- level 5 wizards then;
- level 5 balloons and while you are doing that go for golems asap.
This will allow you to start off with massed hogs then progress to HoLo and GoHo which are also staples in TH9 and will help your progression far more.
Added to this heaps of TH8 bases are upgraded to face dragons, so early to mid TH8s will have upgraded their air defences as a priority, which limits mass dragons effectiveness pretty early on, it's not to say they are useless, they are still powerful but just not as consistent. Also added to this, dragons really aren't staples at TH9 so you are probably better off getting out of the dragon phase as soon as possible.




