Just a question for you and maybe get some good info from others who know more about this - did I see that you said you have your GFO reactor hooked up and running right now? Do you really need/want to do that when trying to cycle? I would think you might be removing nutrients that would help the cycle, especially when you are starting with mostly dry rock.
Tank is looking good. I really like the 2'Dx2'H dimension (mine is 36" long with same D and H). Nice depth of view and room to scape while leaving space for swimming AND you can reach everywhere without swimming.