I need to put a hole in the wall for the tumble-dryer hose. I haven't got the hole cutting kits. I do have an SDS drill and long drill bits so was thinking of drilling the centre of the hole and then drilling a series of holes round the diameter of the hole and knocking it out. Messy but I will try and tidy it as best I can and it will be covered by vent outside and behind the tumble-dryer inside. Sound ok or is there a better solution? Tips? Thank you.