For us to offer any additional help, we really need to hear back from
@Cbakes with the direction he is leaning towards.
If using an AT screen, especially with a false wall, you don't need pretty Speakers.
Or is he wants On- or In-Wall Speakers behind an AT Screen...
Will he have an equipment room?
Other aspects of room arrangement that would help us make better recommendation for Subwoofers.
As OP has also admitted that the budget for parts of this are slightly mutable, getting an update on budget strictly for Speakers and all electronics including PJ and Screen could be helpful, too.