Hi! My husband and I are installing a bathroom in our basement. The rough ins were placed in a hodge podge, so we need to move the sink drain and toilet drain. Both are only moving about 3 feet. My question is about breaking up the floor. We had an estimate for the whole job and about fell over. My husband is nervous though about breaking up the floor. He is afraid if he starts at it with a chisel and hammer, a running crack might go across the basement. I don't see this happening, but what do I know? Any advice on the best way to tackle this? Thanks!