First, great decision on picking the 3P hitch , you won't regret it.
Yes, Sean is great to work with. I wish all company's had the customer service that Propride provides.
I installed mine myself last weekend. I would recommend installing yourself since any dealer isnt going to have anymore expertise in installing these hitches than you would. Sean convinced me of that.
Give yourself a solid day to install. The hitch goes on um..."without a hitch" (bad pun). It's the mods to the trailer I had to make to accommodate the jacks and hitch box (move and raise propane tray/tanks, wiring harnesses, paint rust and scrapes)
The directions are detailed, but I'm a visual guy (sorry Sean , I'm no engineer). What was really helpful was a kind fellow who documented his install with step by step photos. Link below..