The biggest difference is that you have such a large tank compared to most that posted in my thread. I am here in Las Vegas this weekend and checking out some of the local casino tanks. It seems like all the larger tanks have multiple tangs in them. From multiple clowns to a bunch of hippos and many others. Since your tank is so large, you can take your egg crate acclimation cages and use them as a tank trap if they start getting nasty once you release them in your main display.
As for my build I have been working with Josh (RC - CoralReefDoc ) . He has an amazing amount of knowledge in this hobby and is wanting me to spend a little more time getting my 90 Gallon dialed in before going head first into my 300 Gallon build.
He is really riding me on my knowledge of this hobby and wants me to things right the first time instead off learning at the expense of innocent fish and corals. So I have been purchasing my items for my build and also using some of them on my 90 gallon. Since I haven't been in this hobby that long, I am doing things like learning how to set up and program my APEX, setting up my dosing system etc.. And also really staying on top of my husbandry skills. I am also starting to grow out some SPS frags etc..
You always hear everyone talking about good husbandry skills and perfect water parameters. However until you achieve it yourself on your own system, you really don't know how well Corals respond. I am now finally seeing it for my self. My 90 Gallon is doing great and I am a lot more confident about diving into the 300 Gallon. If you ever run into any issues with your system and want someone local to assist you, this is the guy. However beware, he will definitely call you on stuff. I really haven't found anyone that is so passionate about the fish and corals. He treats them like they are his own kids.
Once again, what you have achieved on your system is outright amazing. Keep up the amazing thread.