Question for KEM farmers

I'm level 440ish, multiplier is just over 260% (+ all SH buildings) and I always have collider turned on. I build 25 at a time (so I stop when the price tops out at $14400 per building). I level up roughly 3 times per cycle and do this around 3 times a day... so 9 donuts per day.... + I go up a level pretty much every time I clear buildings/characters every 4 hours which pays for my KEM farm....so maybe 10-12 donuts per day + any extras. I seem to comfortably average 70+ per week including collecting donuts from daily tasks, railyard etc.

I only started KEM farming about 4-6 weeks ago and have go gone up about 320 levels in that time! Wish I started sooner!