I don't think it really matters where your vertical drop is. If you do it closer to the cyclone, then you obviously only have one vertical instead of one for each tool, and that would save some pipe. As far as how the system would work, each tool would still only have one vertical to negotiate, so I think there would be no difference. But if at all possible, have at least 5 feet of straight run to the cyclone inlet. Something about getting rid of the turbulance from an angle in the pipe helps separation in the cyclone. That is also why I believe Bill Pentz recommends angling the inlet going into cyclone body, so there is no turbulence getting the air flow to head down the cyclone chamber.
If I had my dream shop where I had a walk out section under the shop for lawn tools, etc, I'd have the cyclone underneath and make my runs under a wooden floor. Everything would be down hill as far as the chips and dust goes. Jim.
Home of Irish Setter Rescue of North Texas
When Irish Eyes are smiling, they're usually up to something!!
At a minimum, I'm Pentatoxic...but most likely, I'm a Pentaholic. There seems to be no known cure. Pentatonix, winners of The Sing Off, season 3