alternator upgrade

Hey all

I currently have two 12" kicker l5's w/ a hifonics amp.. pulling about 1000 watts. I realize i probably have about a month until i get stranded somewhere with a dead alternator.. 01 neons have an 85 amp i believe and im going to need something like a 120..

BUT.. i am also thinking about adding a 4 channel amp to my speakers..  i just need an amp thatll do 50x4 @ 4o. any suggestions? AND how much more amperage would i be pulling.. would i need to bump up to around a 150 alternator??

My headunit is an Alpine IDA-X300.. only one set of preouts.. when adding this second amp am i able to simply daisy chain the rca's from the output of my sub amp to the input of this future speaker amp? if yes, would that be backwards, and should i connect the main rca's to the speaker amp then daisy chain the sub amp.. or would that make no difference?

Daisy chaining the rca's is perfectly fine as long as the RCA outs on whatever amp connected first are a true "pass-through" type meaning, non-filtered.  Some amplifiers have a switch to have the output RCA's either non-filtered, or filtered via on-board crossovers.

When upgrading your alternator, my feeling is more is better.  Better to have too much current availability than not enough.  Before long you'll get used to the power you have now, and wanting an upgrade.  Having a larger alt will give you the option of more power, more bass, and a painfully loud system down the road.  Upgrade once.

one more thing. i have 4 speakers all 4 ohm 50w.  do i need a 4-ch amp to power all of them at 50w x 4 @ 4ohm. OR could i go with a 2-ch amp and do something like 100w x2 @ 2 ohm and wire the front 2 speakers in parallel as well as the back 2. Sorry if this is a noob question. Im growing out of my bass days and into actually being able to hear my music.