Here is what I use for loot
18 - Giants (L4)
1 - Healer (L1)
40 - Barbarians (L4)
56 - Archers (L4)
Healing Spell (L3)
Level-1 Barb King (Optional to deploy)
Total troops = 200
Total cost = 71k elxir
Strategy
First check for clan castle troops. Finish them first
Deploy gaints closest to Air defense, drop lightning spell on the giants
Once the Air defense is taken, deploy the healer
Deploy the arch+Barb on the otherside of the base, where they can take down the other air defenses possibly
This strategy will be fool proof to win and will fetch you 3 stars if you take 2 more ligthning spell, but the cost will shoot to 110k, so if you are on a trophy push activity then you can use this at TH7
Let me know if this helped you
