No no don't go to sub 200, it's not viable for TH9 or 10s anymore as you'll be in clouds all day and find TH6s and 7s.
Best way to make a large profit is to play in long sessions without logging off and starting searching for raids when your camp is 75% full. If you're not boosting, definitely go with BAM. If you're boosting, do GiBarch or GiBAM. And you should go for 200k of each if attacking storages, but 150k of each is fine if you're attacking a dead base with collectors outside.
Here's my experience in Bronze 3 lol:
https://www.youtube.com/watch?v=k_7Gbv-MWcM
You want to definitely use BAM or Barch. I recommend BAM if you're not boosting, you'll get a full army quickly and get more raids done and more loot. You can farm anywhere in Silver or Gold, but if you're looking for great DE go up to Gold 1 or 2.
2 Barracks full of Barbarians, 2 Barracks full of Archers, 1 DE Barrack Minion (limit it to 16 Minions)