Rockk::Next Audio setup

hi to all fellows;
I still remember those days of my schooling whn i planed for some bass stuff in my car n started to knw about some bass stuff avalble in the market...now its a long time im listning to different sound setups..but knw im getting a bit confussed about what need to bee installed ths time tht can reaaly bang my car n its really difficlt for ears to handle tht bass...
I have tested many woofers such as:

* Pioneer 305c,306c,307 n 308
* Kenwood 3010,3011
* cervin vega vmax-122,12.4
* alpine type r 15"
* jbl gto 1204 n gt-5

my last setup was a pair of cv 122 on solid audio 1600d n later on 12.4 woofer..usually i used a ported bass tube as i like it more tht sealed 1..

Now im planning to go for my next audio setup with some 2-pairs of any woofers...
The amps whch i got right now are:

* Solid Audio 1600d
* Solid Audio f2000

n Pre is the same old 1:

* Pioneer 9850bt with 12-cd changer n usb adaptor ub-100

n speakers n components whch i got are:

* Kenwood 702p components at front
* Pionner 6996 kevlar speakers at back

These are running on a BlackMax Crunch 4175 4-channel ampliifer.

Now i want opinion on whch subwoofers to get them installed ths time on my SA 1600d n f2000...
Also im getting another f2000 tht im planiing to get it replaced by my 1600d...but to get tht f2000 i need to go to isloo

The options whch i got are:

* Get a pair of 15" woofers on f2000 n 12" on 1600d.
* Replace Solid audio 1600d with f2000 n get 4 woofers 12".
* Get a pair of type r 15" n install thm seperatly on pair of f2000.
* Get 2-pairs of pionner 12prs n install thm on f2000 but f2000 is way too much power ful for thos woofers coils to burn up!
* Get pair 3001d4 spl n run thm seperalty on f2000 but spl wont giv tht performace....

Also im planning to get 90-100amp generator instaled n 100amp ags battery..

I neeed help of my fellow pw member this tim in deciding about subs n amps.....