Mine was a burp setup only, never meant to play music. So that is a bit irrelevant lol.
Are you wanting to stay under the window line? If so I would consider something like 3 12s personally.
If I can get some good output while staying under the window line, I wouldn't mind going that route. But I'm considering a wall. My brother had a chevy s10 back in the day powered with a couple blue wave amps, a really high end jvc headunit, and two 12's and it was heart pounding bass. I've not been able to get that pounding bass even with 2 12" Pioneer Champion pros on 2000rms. I'll have to ask him to see if he remembers what he was running but I wanna say it was mostly rockford stuff.