Female/Male ratio?

I'm hoping to breed my females next year and am currently on the hunt for a adult Bumblebee male. I was curious. Would breeding a male to 4 females be too much for a single male? Would it take too much out of him? Or perfectly safe?

Your thoughts?

An experienced friend of mine told me a big enough male can handle 10 females. Obviously this number depends on the male's size. If he's losing too much weight, cut his breeding down or give him a break to regain his weight back. It's something that depends on a single male.

I like 1 male for 3 females personally! They can breed up to 5 females. You need to breed every female once per shed cycle(6 weeks). A male that is 1000 grams plus should have no problem breeding 4 females. He will let you know, if he stops breeding all of a sudden then he needs a week off! 10 females are way too many for one male in my opinion!