I don't need any new individual bits of dive kit like regs or DCs so after picking up a fleet of Genesis DPVs, I'd pick up a Defiant 80 (Metal Shark Boats) upfitted for extended team diving trips with an on board compressor, all breathing gases, maintenance station, DPV charging rack, etc. Metal Shark's Defiant 80 in base trim is built for sustained periods at sea for a total manifest of 10+ people. So, a crew of three (most likely) leaving the balance for divers. To keep costs down, accomodations would be intentionally austere, galley fare nutritious but simple and divers would assume some onboard crew tasks (with supervision).