Prep for wall building weekend 2

My dad returned again on Friday the 20th to further help on the basement. He arrived about 5 PM. We went out to Lowes to get supplies for the next two days. We started with trying to figure out which sump pump to buy. Then we spent at least an hour talking through how and what pipe to run from the pump well to the new drain outlet. After deciding on the piping particulars we went to get a solid core door and some more plywood. We bought a pre-hung door, the only problem with doors of this type is that often they are in bad shape even at the store. They aren't held together that well so if the door isn't handled well the frame can easily be damaged. The plywood we got was higher grade, that way I could just paint it and not worry about textures.