I have two female kittens 7months and 6months and am getting a 8week old male. any advice?

Bella and Smokey are both fixed. My new one will be too eventually, I am just concerned that the females may attack him. Any suggestions?I have two female kittens 7months and 6months and am getting a 8week old male. any advice?
Haha, the biggest advice is to be patient. That kitten phase can drive you up a wall. Kittens go crazy. Anyway, my guess would be that the cats are young enough that even if they don't get along too well at first, eventually they will warm up to each other, or learn to tolerate each other. A new pet in the picture may lead to the others acting out a bit, but give it time. Animals are instinctually territorial of their homes and owners. But they'll learn to live with each other. Introduce them to each other slowly, and don't panic if they fuss and fight to begin with. Be persistant. And don't be overbearing or pushy. They'll come around on their own. Good luck!