Hey, congrats on the baby!
I dumped my box subs and went to an infinite baffle sub setup. Halfway through the project now with two of the four 18" drivers installed. The other two will be in by the end of the month. Just two are insane. Best, no compromise, upgrade I have done in the theater. even the wife loves it as there are no big boxes on the floor.
RS600, 133" 2.8 HP Screen, Panasonic UB-900
Marantz, 7702MKII, Emotiva XPA-1, XPA-2, XPA-100's
7.2.4 with 4pi JBL LCR's, Athena 100 surrounds and 4x Volt 10lx ceiling speakers.
4x FI 18" IB subwoofage with Behringer EP400 amp
Fabric walls, fabric posters, fabric under soffets. No reflections!!