It sounds like you're pretty set on doing what you want to do, so why ask if you can? Give it a shot - what's the worst that can happen?
You also seem to have an odd infatuation with this Dr Holmes-farley fellow...
Haha it does seem that way, doesn't it? There's a lot of information regarding this hobby, and a good chunk of it is contradictory. I read a great article he wrote regarding silica in a reef aquarium. Seeing how the substrate I want to use is mostly quartz, I figured he was the man to talk to. The expert in the podcast I shared in an earlier post even referenced Randy.