DE Farming New TH9

so I just hit th9 yesterday and I did the essentials. I have 4 builders. I did the spell factory, laboratory, and 1 xbow. for the other builder I did the new stuff, walls etc. I did a 2 hour boosting session yesterday and I got 13k DE, and I successfully bought my archer queen. I was very excited and then I thought whether 13k for 2 hours is good or not? I thought it was decent for my first DE boosting session but then I thought I might need some advice. I would be very thankful if you guys could give me advice on armies, spells hero placements etc. Also please tell me how much DE you make in a 2 hour boosting session. I used 60 barbarians, 64 archers, 20 goblins, 8 giants and 8 wallbreakers. Thanks if you can help me!!!;)