It's good that you are taking your time and really planning it out. I'm sure there are plenty of internet aquascape pics to view to give you some ideas how to finish it off the way you want it. As others mentioned along with you, livestock choices make a difference and there is nothing wrong with making changes down the line either after you have been up and running awhile. I added more rocks after a few months of operation too as I noticed my fish needed more hiding holes.Thank you, I appreciate your input! I'm trying to consider a way to add more hiding places that fits with my aesthetic goals, in any case its still gonna be a bit before any livestock goes into the tank so I have time to figure it out. Thinking I might replace the small island with a cave-y hole-y structure I can build. Half the fun for me is the design process so I'm trying to avoid the option of just throwing a bunch more rock in the tank, but I definitely need to prioritize the needs of my animals more.