Is buildiing a HT around the speakers a good start

I just bought a new house with a gorgeous library. I thought it was perfect for my dream of building a home theater. The room size is: 19’L x 11.2’W x 8’H. My listening habit is 80% Movies and 20% Music. The biggest challenge is the speaker placement. The library covers three walls. The front wall has a bay window incorporated into the shelving. My wife would be quite irate if were to “clog up” the front with speakers. To resolve the issue I am thinking of the Thiel PoerPoints for all five speakers. This will be my first try at building a HT. Am I on the right track? Do I now buy components that work well with the speakers? Does anyone have thoughts on which components would work well? It should be noted that the PoerPoints have limited bass extension, in this case a lower limit of 75 Hz. Thus, a subwoofer is mandatory.
I am thinking of one of the following 3 processors, as they are in my price range: a) Krell Showcase b) Parasound C-2 c) Aragon Stage 1