Keeping male in room

Hey all so I was wondering how I could go about this.. my idea is to start 3 reg auto seeds and let em do there thing until they show sex.. I'm hoping to have 2 fems and a male and keep the male around for a while so I know they get pollinated wait till there ready and pull so now I don't have to buy reg auto seeds and if I need more I can keep male. I'd just like to hear y'all's thoughts, I was thinking about trying to use colloidal silver with some fems but don't have the money atm

Are you sure thoose are not feminized autoflower seeds?

Sure you can keep them together. I bought 8 autoflower seeds and kept the male and female together. Now i have about 100 seeds to test out. Hope it all works out for you.