Yeah that's pretty much it mate nice drawing lol I think it should be pretty good, the air route will have less bends and stupid bits than the standard pipe, the only thing I can think of that wont be too good is the flexi air pipe stuff isn't exactly smooth like it would be with a proper aluminium or stainless steel pipe. But all enclosed filter kits use flexi pipe so it should be alright I guess. Just aslong as the cheapo ebay filter is up to the job, but then again I can always use the cheap one for now and get a more expensive one later, aswell as getting some proper piping.