Very nice build. I just skimmed through it. I know you didn't mention the sand issue, but I had an issue with sand (also 1" ssb) blowing around with 25" height. I just wanted to let you know.
I don't think my tank has been set up long enough to say whether or not it was a bad idea to put so little rock in proportion to water volume. However, as I mentioned in another post to someone concerned about my lack of rock, I don't have a very heavy bioload, so there shouldn't be as much pressure on the rock and its bacterial inhabitants. Also with an efficient (and soon to be oversized) skimmer, a refugium, water changes, and other good husbandry measures, I think I am in the safe zone.
I'd say go for the open look if that's what you want.