I decided to start a new thread since I made a decision on what to build.
I am going with a pair of slot ported boxes with the Infinity 1262w drivers suggested to me, powered by the iNuke NU3000DSP. I spent most of the day teaching myself sketchup and amazing that now I can do in 5 minutes what took me 2+ hours earlier today when I first downloaded the software. I am having fun with it and learning it will prove useful I am sure not just for the sub build.
Anyway, here is what I came up with below. My boxes, in order to fit into space needed are at their maximum outside dimensions of 16" wide, 19" deep and 30" tall. Before I finalize the design and make a cut list, need some input and this gets technical where I am very weak at the moment:
1. I separated the slot ports into two. Each 1" tall by 6 1/8" wide. Should I remove that middle brace and simply have a single 1" x 13" slot port? That would give a little more volume to the port.
2. The ports go in 18" to the back of the sub and then I have them running up the back of the sub another 21". For lowest tuning in the box of this size (I am hoping for 20-23Hz), how far up the back wall should the port(s) go?
3. I centered the driver in the front of the box. Is that ok, or should it be higher/lower or does it really not make a difference and position is aesthetic only?
Thanks to everyone for all the help so far.