Thanks to @
CSG Mike, I finally decided on my coilovers.
With the 2015 BRZ, I went the exhaust route first, but with this car I wanted to try wheels/suspension/tires first. I ultimately decided on Flex A with the advice from Mike on the fact that I plan to attend track/autocross events, and this set up has a lot of R&D from CSG for this application.
I won't get them till April, so I might end up getting other mods done first, who knows :P