No I would not want to drill into concrete for 80 Ft. of wall space. I have never shot into a block wall. I don't know if it will bust out or not. If it won't, use the shot. Also back the shot up with construction adhesive on the blocks between the studs. The shot will do the floor also, nomatter how old it is. I really hope we are helping and on the right track. We can only see your project in our minds. As far as the drill,consider renting. Why have $200.00-$300.00 sitting on the shelf. Ron J.