>>283120732
3 is the ideal.
- Tried and tested party composition. 4 niggas is a row is a thing for a reason
- Enough for variety, but not too much that it becomes generic and trope-y
- FFFM is physically possible. Anything more and there's going to be some awkward harem sex, unless you're fine with interharem yuri / orgy
- Perfect cuddling position

6 should be the hard limit. Anything more can still work, but it's physically and mentally impossible to satisfy and love them equally at that point.