Okay so checked out the bosses flock. Only about 8-10 hens. That's not going to be enough for two roosters to share happily is it.
It does depend though.... on a lot of things. The individual rooster may only want 2-4 girls but in genereal as a rule of thumb, 1 rooster to about about 5-8 hens. Depending on the rooster though. This just helps the hens from injury and stops the roosters fighting. So he has a big WLH so he may need 8 hens and your little rooster may only need 3, unless he wants more.lol.
It may also depend on the age of the boy's. A younger one is going to want more girls, but an older one may not let him. If your rooster is older than the WLH he might actually take over the flock.lol. Even if he is smaller!
I'm really not sure how it would go.