12'x16'x8' room OK for good stand mounts?

I got the OK from the wife to repurpose a room in the house as a listening room. The room is 11.5 x 15.5 x 8. I have always loved the sound of Joseph Audio speakers as I have heard them at every RMAF until they cancelled the show :-(

So I’m thinking this is the time to get Prisms or even Pulsars! My question to the group here is about the room and the speakers. I realize I will need room treatments. Since I’m about to retire, I will have time to build the room treatments and do lots of measurements to tune the room and speaker placement. The floor is concrete slab with 3/4" carpet pad and wall to wall relatively thick carpet. The walls are wood frame with sheet rock. I listen to rock, jazz, and classical at moderate volumes.

Will the room be too small for Pulsars or Prisms?

I also love the sound of Monitor Audio Golds. I was thinking Gold 200's, but I also worry the room would be too small for 200's. 

I appreciate any advice