Questions - Need some input

I'm getting ready to upgrade my tank from a 75 gallon to a 140 with a 40 gallon sump. I need to upgrade my skimmer and had considered building the CS1 from Avast. It's rated for up to 200 gallons and comes with a sicce PSK 2500 pump with avast modded volute. My intention for the tank is to concentrate on SPS and LPS corals. Any input would be helpful.