So...the 90g is here!!
Few quick pictures. The tank is not in its final spot yet, believe it will be going where the 60g is so that is definitely a work in progress.

The guy was very nice and helpful with everything. He got it set up in terms of the plumbing and talked me through it as well.
I picked up 40lbs of sand today from my LFS. I did realize last night I need to do something about a background while I'm able to actually get to the back of the tank easily. I think I'm just going to do black.
I've got RO/DI still making into a 32g Brute trashcan, almost full, and have some other water ready as well. I've got a couple tubs and buckets for holding water, fish, corals, rocks, etc that will be coming out of the 60g. I also picked up an extra heater last night so I think I'm set there.
The only thing that is really holding me back right now is getting the support taken care of, just in case. I'm hoping it can be done today so that I can fill the tank tonight and let it run, checking for leaks and all.
If I was to do that, today or whenever, and the 90g is going where the 60g is currently sitting, would it be an issue to have the fish/corals in tubs like overnight? That way I can get the 60g emptied, the 90g it its place, fill with the tap water, run overnight, then moved all that was in the 60g into the 90g so long as there are no issues.
Also, if any issues are seen or even any questions about the plumbing definitely speak up. Feel a little bit better actually seeing this in person but without seeing it running I'm still not quite sure what to expect.
Edit: Forgot, I got the live rock as well, 80lbs for $100.