Wow Steve - that's definitely some impressive suction! I've decided to keep the Laguna DC I picked up from you "mobile" to save some dedicated footprint on the woodworking side of the shop, (a tradeoff for a future "bandsaw station", and it will in turn keep my runs super short, (sub 10'). I'm also "hot-rodding" it a bit w/ a revised filter/ plenum setup I'll share once I'm done. While a 2HP cyclone will obviously pull exponentially less CFM than your new beast, given the short runs, (i.e. small amount of material needs),this has convinced me to just go w/ the heavier 24ga pipe from Oneida or the like vs. the ~30ga stuff from the boxes. I've got a plan to hide most of my ductwork in a new outfeed table setup, so replacing a damaged section would be a real problem down the road for what I've got planned.
Glad to hear your putting the new DC through it's paces at any rate!
HMH