I really struggled liking the 'scape. It had all of the features but I thought that the shelf was angled back too much, and the sides of the tank were very steep which would not be conducive to coral placement. So here is my last and final. I am happy with it and I think it accomplishes the original goals: sandy area, horizontal space, cave, and asymmetry.
I picked up some Turbostart 900 at Stone Aquatics along with some RO for top off. I added about half of the bottle (2oz) a few weeks ago. Then this morning, I added the rest of the bottle. Not a lot of logic there other than, the bottle has a shelf life of 4 months, and absent a complete rebuild, I didn't need a bottle of reef bacteria growing in my fridge.