Instigator
Banned
First thing you need to do before you do anything is do the Big 3. You need to do this no matter what you do next. Sounds like you will be running anywhere from 1500-2500 watts rms. Its cheap, takes less than an hour to do it. You can also get that Mechman alternator for $369. There are car audio dealers out there that sell them. If you need a reputable car audio dealer where you can get some good equipment from and a Mechman Alternator for much less than MSRP, PM me.
Also, you need a better battery. For what you are wanting to do, plus upgrading to another amp to run your speakers, you need a solid battery. As mentioned before, you need a good quality battery. You can't mix an spiral cell battery (Diehard, Interstate, Optima, etc...) with an AGM battery.
I believe a Kinetic was recommended. I have a Kinetic HC16V that will handle up to a 3000 wrms system. This will replace your stock Interstate battery and will be the only battery you will need. PM me if you are interested in the battery. I'll cut you a good deal.
Also, you need a better battery. For what you are wanting to do, plus upgrading to another amp to run your speakers, you need a solid battery. As mentioned before, you need a good quality battery. You can't mix an spiral cell battery (Diehard, Interstate, Optima, etc...) with an AGM battery.
I believe a Kinetic was recommended. I have a Kinetic HC16V that will handle up to a 3000 wrms system. This will replace your stock Interstate battery and will be the only battery you will need. PM me if you are interested in the battery. I'll cut you a good deal.