Here's what I would do...
Given your 12 count I would break it down into 2 groups of 6 That will give an ohm load of 1.3 Series / parallel OR .33 parallel / parallel each group.
I would look at the Hifonics Goliath, it puts out 5K at 1ohm.
That would work well with one amp if you ran all 12 off it for the time being at .66 ohm. With box rise you will be around 1ohm anyway Then when you have the cash get a second one and strap it or seperate it off.
Sometimes amps will put out more power if there not strapped.
BTW hit up WCA Rusty for a killer deal on a goliath. :^
http://www.stevemeadedesigns.com/forums/in...hp?topic=1417.0