So the stand is built and the finishing on it is almost done. I used Flex coat waterproofing inside the stand and on the top. The rest is cabinet grade birch and I have just varathaned it.

Before finishing
After finishing:
We decided to add 2 pieces of Angle Iron on the back bolted to the stand for putting on a light frame at a later date.
I need to dry fit the sump and decide where I am going to put holes in the back for the returns. I also need some advice on how to plumb it.
It has the return holes in the Eurobracing on the top and there are 2 holes in the bottom just behind the center of the tank. The bulk heads are 1 inch so I was thinking of having the 1 inch pipes to the level I want to drain and then put a 4 inch piece of PVC around them and attach my rocks to them so they are kinda hidden. Not sure if this is the best way, but I am really leary to drill the tank myself as if I break it I am out of luck and I already sold my 75 gallon.