Thanks for all the comments! I ran into a snag with a bulkhead so now I'm waiting on another one, so it looks like I'll be a week longer before getting any water in this thing. I also ordered my heaters today, I went with 2x 250w Ebo-Jagers, I want to put one in the sump and one in the overflow.
This weekend I got all my Baserock rinsed/washed, it was a time consuming process. I bought 2 big 'tubs' from the hardware store and tossed in my Mag 3 and filled it with rock & water, I let it circulate like that for about 12 hours. I had about 5 'loads' of washing to do. It worked well and got out alot of 'dust' and debris, so I'm glad I did this before I put it all in my tank.