How much attic fan is enough?

I am looking into finishing my basement. I have a ranch with cinderblock walls and a cement floor. The basement is unfinished - except the previouse owner put sheetrock on the ceiling - but didn't tape or spackle. I am looking to do basic construction - nothing fancy. Sheetrock the walls and ceiling. Recessed lighting. Carpet the floor. I'm thinking about getting part of the room tiled for easy cleanup of the kids arts and crafts. I am also looking into adding a 1/2 bath - toilet and sink. My problem here is that the waste pipe is about 3 feet above the floor. I'll need to get an ejector setup of some sort (I will be getting the plumbing done by an outside source.) What I am asking for is resources for guidelines, ideas, planning. Which books are better than others? Are there any good websites? Anything else I'm missing? Thanks... Ed

I have cement basement flooring that has been painted. I would like to change it by adding self adhesive vinyl flooring tiles. I have two problems with the floor,the first being that it is not level and second that the paint is chipping. How do I level a cement floor that has the master drain in the middle and should I remove the paint before putting the tiles down and if so what should I use to remove the paint?