For war, 3 + 1 hounds, 22 loons, then either minions or baby dragon to help cleanup or some ground to help kill AQ and/or AD and/or sweeper. Depends on the base.
For farm I just add some archers to help clear ground early on/corners/cheap filler.
I CC a poison for war and often add a 2nd poison to go with a bunch of haste and some rage. (2 rage, 4 haste, 1 poison is often my spell build in a war). Two well placed poisons can usually primarily kill a dragon, and that's the hardest CC to really go up against (stuff like minions, wiz, archers are more easily poisoned).
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I just got lh on my th9 so they aren't upgraded, but I usually don't finish with more than 1 lh up. I don't think I could clear a lot of bases with only 3 lh.
This makes sense to me, when I had L1 I would fail too many farms with 3x LH. I didn't war with lavaloon then (I ran gohowiz pretty effectively until L2 LH). I should've added a 4th L1 LH back then, even a 5th I could see working for tougher bases where I can't ground kill AD and/or AQ.
When you get L2 LH for TH9 let me know if you still feel 5 LHs is better than 4. I'll experiment with 5 vs some tougher bases and see if I improve (well designed max TH9s I don't always 100% with lavaloon, execution needs to be near perfect with my lineup).