Hi Jason,
"I've come to settle on a plan for a mixed reef, some softies, sps and lps. I think Eve's tank is a fantastic example of what can be done with 2 part solution."
Just to make sure you have all of the facts to make a good decision, I don't use 2 part (or any other additives) on the softies/lps tank. I only use 2-part on the SPS tank.
In my opinion, if you are just setting up the tank and even if you are transferring everything over from a tank 1/2 the size of your ultimate tank, you don't need to do 2 part or use a calcium reactor. Do regular water changes until you have a reason to start supplementing.