x1.800.4 install

hi all i have a lightning audio storm x1.800.4 amplifier it is connected to a IXOS GT 1F cap with 4 gauge wiring. im on stock alternator and its now failing(it gives 13.5volts :(   ) have a alpine cda-9815 head unit.

in my 97 corolla i have front: phoenix gold 6.5" octane components 70rms and rear: pioneer 6x9" 60rms(i think) and for sub: lightning audio strike S4.12.4 300rms.

i bridged 2 channel for the sub(400rms x 1)REAR      and plugged the 2 left channels and 2 right channels in parallel in the left and right FRONT

so that means my amp is giving 400rms x 1for sub + 200rms x 2 for speakers.

i know about changing my alternator its coming in 2 weeks or so

so what improvements should i do to my system

any ideas?

thanks for your time guys

my next alternator is going to output 120 amps max because i cant fit a bigger alternator i must use the original casing is it going to be enough for my amp and my electrical system of my car, my A/C is always on and my lights too.

im on a 1F cap for the amp.

and what is these things about LA underating their amp? it costed me like 1000 more canadian.

then if it is crap what can i buy next time. im aiming for a 4 channel + mono amp system i want alot of bass but quality too(listening to classic and hiphop....) any ideas about some brands?

also i want more than 50rms channel..

any good package idea folks??

i dont want to invest in a battery i prefer putting in a high ouput alternator something like 150 to 200amps or more and my battery is almost new 1 year usage.

anyway someone know how to measure the ouput of ex. one channel(full power) in rms. i have a quality multimeter.