I emailed him yesterday after I posted and he called me back.
Gave him he details for the house and he told me what I needed. Didn't quote a price yet, but I'm sure I can get my order in. Even without the group discount, I'll still get the rebate
Great guy, easy to talk to.
My grading is not done yet and I don't want to mount the unit on racks. I'm in no rush to get it installed.