It's all thanks to my clan leaders they helped a lot plus trial and error and tons of lurking in forums.
I'm making about 6bil per eb without crystals and close to 14bil with min troops earn 19.5mil max troops makes 25mil
I am a guild hansel. In a couple more lands I will start converting to SoS. I am making anywere from 5bil to 15bil per day, with my next land at 40bil.
FoD is NOT the best payout. It's only good when you get treasure (which is not often for lower builds that I've seen). If you do B2B haunts and hit items every time, you'll grow fast. Guilds give the bests lower tier plunder, but T4 builds give more plunder. CF's give decent plunder but reward at the end is better than other T4 buildings I believe. Don't go pure attack build, its always good to have spy att and defense (even if its not a lot) and plus, even though you only have maybe 4 SoS, you still get the extra assassinations and more reward at end as well. sorry its a lot lol
Just on highland. 2/3 CoE and 1/3 level 4 guilds, b2b haunting ( hitting item phase ) money will roll in. Leave SOS conversation till later it's expensive and doesn't add lots compared to upgrade of attack builds. Best of luck