Bonjour! I'm about to connect my new CNC to an old modified 2-stage DC that is less than 1hp. The DC is quite close to the machine and I have 6" spiral pipes left over from my main DC. Should I just connect the CNC (4" hose) directly to the dust separator with a long 4" hose that follows the ceiling until the DC or run it to a 6" spiral pipe that gets as close as possible to the DC? Or would it be better to just get more spiral pipe of a lesser diameter? Thanks.