Magnepan, Ohm, Spatial or ??

I wouldn't worry about subs until I heard the speakers. I was wondering why the 1000's were suggested when your room measurements are 1976 cu ft which is above the top end rating on those? 

I’m guessing because that looks like a pretty lively room with wood floors so better to not put something too big in there.

You can always add bass but not take it away very easily though isolating from the floor can help make more bass less intrusive.

You do not need big Ohms for good bass in most cases but you might want to add subs in some rooms  if shooting for the lowest octave with smaller ones. Especially with a tube amp driving them.

There is switch behind the binding post cup which is set to neutral. I guess if a little more bass is desired you can move it to + a little less - . If more bass is wanted then try a sub. 

3 dogs!  *L*  I guess one is either 'camera shy' or doesn't want it's 'image' distributed without a 'press release'....;)

Our Sunny is useless as a portable diffuser, prefers to be 'under' furniture.....or underfoot....

Agree with maps, hold off on a sub.  Placement and rotation will be the primary project...inches and angles....

Pet positions are up to them, as usual....*L*

Sorry haven't read the whole thread, but don't forget about room treatment. The best speaker in a bad (acoustic-wise) room, won't sound their best. Best of Luck.