You don't have to pollinate the entire plant. You can keep the male in another room, harvest some pollen (there are threads that show you how to do this), and selectively pollinate single branches while allowing the rest of the buds to mature. If you have more than one strain of pollen, you can even pollinate different branches with different pollen. If you do decide to pollinate the entire plant, you can get a huge amount of seeds. I got over 600 seeds on what was in reality a small white widow plant. And by the way, after you remove the seeds, the leftover weed isn't horrible. You can still get high off of it, but I prefer to use it to make brownies.
BTW, I like having a large supply of good seeds in my fridge ready to go. I've have virtually 100% germination rate with these WW seeds, maybe because they are so fresh, with a rate of consistently around 60% female. It is nice to not have to worry about whether one of my precious seeds with germinate, not when you have six hundred of them! Sometimes I keep them in beer cups until I can determine the sex, then I repot. If not this, sometimes I repot them two to a pot, chopping any males that appear after this. With this method you grow more plants, but maybe don't get as much off of each plant.