Of course you can still keep your beautiful boys and enjoy them... maybe if you have a few people you can rely on for sure to rehome your extra boys to, do a small hatch or two... for fun, more chickens, because you have really nice guys and want to. I also wouldn’t worry too, too much about them mating their “sisters” animal breeding is different than human, and backcrossing genetics is common to enhance desirable traits.
They might both get along in your flock just fine (you might want to add more hens though). They may stay the perfect gentlemen, and there is nothing wrong with eating fertilized eggs and letting your girls be pampered and tidbitted by them, the interactions are quite adorable! segregating the boys might not be a long term condition, once they learn manners.
If you can pre-sell straight run chicks locally, that might work better for you... easier financially for sure. Speaking personally from the perspective of a first time chicken owner, and soon to be breeder myself... Heck, I’m currently being overtaken by just 15 tiny layer cockerels, and I thought I had it planned out well enough! (some are great, some are a**h***s, most are somewhere in between) and I have access to 600 acres of land. If it weren’t for the fact I also plan on meat production (not quite set up yet thought), I personally wouldn’t consider breeding my layers at all. Profit margins, and ability to care for the chickens adequately, and shear percentage of males (and they don’t all stay nice, as I’m finding out!)
Best of luck, don’t be discouraged... chickens are awesome, and roosters can be great! (I actually love my little natural alarm clocks!). Breeding is possible, just be very careful about biting off more than you can handle, because they multiply like bunnies, but have sharp beaks, claws, Spurs... and sometimes “attitudes” too boot.