How much money do you keep in reserve?

Kem farm isn't efficient. And I still maintain my opinion. I have over 4k% multiplier. And a house farm. I used to build few hundred kems at a time (you can't do 20 but I feel that's a waste of time). It takes almost one hour for me to click the check mark and wait for the donut boxes. I already only choose again if there is one donut (saves 50% of time) but it's still a chore. Yes I get >100 donuts at a time but it's worse than before the irs came and I used to click one building at a time. Maybe in your opinion I'm not doing it right and maybe you have a better kem strategy that's different from mine. But it isn't worthwhile on the long run, unless the process can be sped up. An ok multiplier and a good farm (not that hard with 20-30 we earn at each event) would sustain a steady donut income that would be much more time efficient. This is only my opinion anyway. I feel we should still enjoy it as a game, than trying to kem farm which makes it a chore. Most players on my friend list with a nice build and obviously good multiplier would try a little kem farm then mostly either give up or keep at a minimal scale. Not sure if they feel the same way as I do. I survived a completed SH but kem farming is still too much a boredom. Maybe you can share your different kem strategy that makes it more efficient and fun. Or maybe my device is too slow. Anyone else finding the collecting from built kem and waiting for boxes part taking too much time?