I think your room will be OK. You may want to check it out with CARA. The bay window isn't too much disruption for the lowest bas frequencies because of the long wavelengths involved. And if the room has the typical framed drywall construction of most Northern American homes, your room damping will be pretty good which will tend to smooth room modes. Furniture like couches and padded chairs tend to help too.As for models, the Professional Series seven π's are definitely the best. The Stage model is good, great bang for the buck. The Theater is nice too, but large. Makes the bass bin as wide as the midhorn. All are fine with SET amps because the impedance curve is very smooth. The midhorn and woofer tend to damp each other and smooth the overall impedance curve.