Help with an enclosure design

[tyma1026]

Ok so I made the cutout with the following dimensions and all looks pretty  good. 

31 1/4 depth

49 width

24 height

 

I have a question.

What do you guys think about putting batteries on the side of the port.

I have a x2 power battery as my main and I have 3 xs power xp3000 batteries.  I want to put one xp3000 on the left and one on the right of the port.  As far left and right as possible to the port.  Is this frowned upon.  Will it hurt the bass?  I figure I'll mount the amp on the back side of the box.  

What do you guys think?

[tyma1026]

I forgot to mention that I'll only be pushing one 4.5k.  My daughters going to private school so I'll worry about another amp and a 4th sub next year sometime.