DE farming for th7?

OK, I've been kinda slacking on upgrading my king. It's only lvl 2 at the moment.

I need some attacking strategies that will get me a lot of DE. I have ~8k right now, and I want to get my king upgraded again soon. I have a lot of empty builders. Almost max th7. Just have walls and collectors. And king. im getting off topic

Anyways, any and all help is appreciated!

Oh and troop/spell levels (Pictures are not cooperating with me atm):
Barb, Arch, WB, Loon: 4
Giant, Wizzy, Light, Heal: 3
Gob, King, Minion, Rage: 2
Healer, Hogs: 1
Don't use gobs or healers... ever, really
I'm upgrading rage to 3 right now.

Barch. Same as with any farming. Also don't waste DE on minions and especially not hogs at TH7.

1. Upgrade the drill to level 3.
2. Farm in Silver 1 or Gold 3.
3. Carry 3 lightning spells at all times. Zap any DE storages where 1800+ is available and the drills are empty.

4. Barch for now, but upgrading giants to level 4 will allow you to get at DE storages of TH7's.
5. Once giants are upgraded, use 10-15 giants, 1 healer, 6 wallbreakers, and the rest archers. Target DE storages with 500+ DE available.
6. NEVER use dark elixir troops.

7. If you are in a decent warring clan, you can essentially convert elixir to dark elixir by winning wars. Use mass dragon attacks in war and, if your clan wins, you will get around 800-1000 DE per war.
8. Upgrade your DE storage, defenses, and walls (in that order) to protect your DE a little better.
9. When you are getting raided and losing as much dark elixir as you are accruing, you should raid for a couple hours to get the last couple thousand to afford the next barbarian king upgrade.