Need some advice on flock dynamics

My older chickens (4-5 mths) have turned out to be 3 White Leghorn Roos, a RIR trio, a Black Australorp trio and (I think) a Buff Orpington trio. They free range and the 3 White Leghorns are jumping on any hen they can, the RIR and BA try but usually get knocked off by one of the WLs, and the BuffOrp not even trying that I can see. My next youngest are 2 Red Sexlink hens and a FBCM rooster who were in the brooder together and still range together and roost together. ( I had three of the FBCM roos but just rehomed 2 and have eggs in the bator hoping for a few hens) Next are 4 EEs, a white roo, a splash roo, a white hen and a splash hen. The white EE roo is trying for anyone he can, the splash roo is doing the crowing. I also have 6 Silkies, one for sure is a roo, can't tell yet about the others. 5 Lavender Orps in the brooder, 2 roos, 3 hens. I don't want all these roosters, but how to decide who stays and who goes? I am leaning toward getting rid of all three White Leghorns thinking that as I have no hens I won't be getting any little purebreds from them. If I keep the others, in case I want to make more (either for me or to sell) can they all get along? I realize that in order to hatch out each breed, I will need to temporarily house the roo and hens together away from other roos. I can't see letting any of the LavOrps go, as they were rather pricey to get. Oh my, it's so confusing, I don't know how folks with lots and lots of birds make up their minds. I want more hens for more eggs, but you have to deal with the surplus roosters, and they are so pretty it's hard to let them go. Does it get easier after you've eaten the first one? And, if I decide to actually eat them, what is the best time to "process" them, age wise I mean. That's if I can find someone to do it for me, cause I sure won't be doing it myself. Thanks for any advice.