In Orpingtons the boys will feather out slower than the girls, and the combs will be obviously pink by 5-6 weeks. You are probably correct about them. A few more weeks will confirm it.
I'm blonde too, so no judgement. 2 roosters will be too many for your number of hens. They will be constantly mated by one, two would give them no peace. Generally a large breed rooster can cover 12-15 hens. Two roosters will constantly be going at each other. I never recommend 2 roosters...
You can get more girls, I would brood them separately until they are old enough to integrate. Either way you will still need to remove at least one rooster for the comfort of your girls.