Finally able to close this one out after I showed my wife the various options you all offered here; 2-4x SB1000/Speedwoofer 10S, 2x Rythmik L12/F12SE, gloss black subs, white vinyl wrap over Monolith 10's (not a chance haha), and so on.
In the end I ordered two Rythmik L12s in gloss white.
What pushed it over the edge was the combo of size, low frequency performance, and from the pics on their Facebook page they should be a close enough match to the Revel Concerta2's white. Decided against the F12SE's since I already stretched the budget more than planned on the TV (now LG CX OLED 77").
To all that helped, thank you!