Gotcha well along the back wall the 4BPs will likely work just as well so if you do go with a bipole style speaker that's what I would recommend. You want to give them ideally two feet from the side walls and at least one foot at the minimum. Otherwise we're back to the 4B or 5Bs.
6Ts won't necessarily be overkill for your size room and it looks like you are at least 12-13 feet from the fronts, which is plenty of space for the 6Ts to do their thing.
The thing is the difference between the 5T and the 6Ts will be most apparent when you are listening to music, so whether that step up in performance is worth it for 30% of your usage is a decision you'll have to make, but the fuller mids and bass extension of the 6Ts over the 5Ts for music is quite beneficial in my opinion.
Yes you can definitely use the Outlaw sub with our speakers, you can't hear any timbre or tonal quality at the low frequencies that a sub produces anyway and the LFM-1 is a great sub.
Jason Hicks
Aperion Audio Guru