This is a great guide, well done!
I have written about this topic a lot in the past, one thing that needs to be added to this is the strategy of what boxes to pick when you get bonuts.
For the following calculations, I am assuming that you are using the XP Collider and have the full 153% SH bonus. My strategies have been KEM farming at lower percentages, and then switched up to Bloodmobile (BM) farming when I hit 2000%, so I will provide my numbers for those two. If anyone has any specific things they would like to use to farm donuts, let me know and I am happy to amend.
The first number I am including is your actual listed percentage bonus, then in parentheses, including the SH buildings and Collider multiplier.
FOR KEM FARMING:
Always go for three donuts: <467% (total of 620% with SH included, total of 3,600% with Collider included)
Go for 2 or 3 donuts: <1,367% (total of 1,520% w/ SH included, total of 8,100% with Collider included)
Always take first box: >= 1,367% (total of 1,520% w/ SH included, total of 8,100% with Collider included)
FOR BM FARMING:
Always go for three donuts: <747% (total of 900% with SH included, total of 5,000% with Collider included)
Go for 2 or 3 donuts: <1,997% (total of 2,150% w/ SH included, total of 11,250% with Collider included)
Always take first box: >= 1,997% (total of 2,150% w/ SH included, total of 11,250% with Collider included)
