might be redundant

[kyroscoeil]

Hello fellow BassAholics. 

I've been scouring AVS and Cult forums for clarifications.

I have a dedicated theater, double studded wall construction, with dual 5/8" drywall on both sides with GreenGlue, 1" air gap between each wall stud assembly. 

basement application - fully sealed. 16w x 26l x 8h
front wall is framed out a few inches from the concrete. 
left wall is 4 feet from the concrete (this is my ''secret passage'' to the electric panel, and built in AV rack closet)
right wall is sealed-other side is to finished basement
rear wall is sealed - other side is to a finished guest bedroom

my proposed location is the left wall, as the ''secret passage'' is 26 long x 4 wide x 9 tall (including joist cavity in that 9)

is it ok to have the manifold fire - across the front wall?  this way it's a front corner. 
I am dreaming of a dual-opposed  24" S.I. subwoofers.   

i'm looking for pipe-organ style rumble.  Am i on the right track??


current equipment in room:
Front  Klipsch RF-7ii's (dual 10's with 1.75" tweeter) 
Rear   Klipsch RF-7ii's (dual 10's with 1.75" tweeter)
Center Klipsch  RC-64ii  (quad 6.5" with 1.75" tweeter)
ATMOS Klipsch 8" in-ceiling speaker with 1.75" tweeter
Sides   Klipsch 8" in-wall speaker with 1.75" tweet

Subwoofers Klipsch  R-115sw  (15" ported - dual, one front left, one front right)