I finally finished the floors. I used a polyurethane by Minwax. Its the same brand I used for the stain and the conditioner for the floor. I decided to stick with the same brand assuming that they probably work well together.
So after I stained the floor and let it dry really I used a universal applicator to wipe the stain on. My brother wanted me to use a roller to seal the floor but I was worried about bubbles.
So I put the one coat on, waited 8 hrs and then sanded them with a 120 grit sandpaper which helps the next layer of Poly stick to it.
And at the end of the night I put the last coat on and closed the house for 3 days. Waited for the smell to die down. You have to let it dry for 72 hrs before you can put any kind of furniture on it. I wanted to minimize the damage that could happen to the floor if things get placed on it before it dries well.