fi btl setup

So I am looking at getting an FI BTL 18" (2000 watts rms) fully loaded dual 1ohm and a power acoustik bamf5000 rated at 3.2kw at 1 ohm. I know I am going to have to upgrade the alternator, but how many amps should it be without requiring multiple batteries? I also know i will need to upgrade the big 3 and the battery(Im looking at an optima yellowtop d34). This system won't be played while the car is off so i dont beleive i need more than one battery. Also, i have about 13cu ft of trunk space so i want to mount the sub in a box close to that size, tuned to 32-34hz.i would like to hit somewhere close to 140 or 150db. any recommendations, tips, or ideas concerning this setup? I'm fairly new to car audio installs and i want to make sure i do it right. thanks in advance.

Whats the year make and model of your car? What is RMS wattage of you Amp?

2001 hyundai tiburon. and the amp im looking at getting is rated at 1.7kw at 4ohms 2.5kw at 2ohms and 3.5 at 1ohm. Power Acoustik BAMF5500 (mono). unless you can recommend a better amp for this setup.

Audioque AQ3500D.1 It will move the BTL without a problem.

alright, i changed my mind. i dont want to put TOOO much money into this car. im planning on buying a new next year. so i think ima just buy two fi btl 12's. Will a 200 amp alternator, 1 optima yellowtop and the audioque aq3500d.1 with big three upgraded be enough to power the system without any problems?

oh yeh. they will be fully loaded. not sure about 1 or 2 ohms yet