I have purchased:

These Hifonics Speakers

This Kinetik Battery
and the Alpine ida-X100 Headunit.
I figure I can run the speakers, even though they're 500 watts, strictly with my new uber-powerful battery, and hold off on the amplifier till I have more money.
I am looking at

This Amplifier and

These Subwoofers, but I want your guys' input.
1. Will that amplifier be enough to power my system?
2. Is that amplifier/subwoofer/speaker combo well-compatible?
3. The mono-block D amplifier is designed to power just a subwoofer, right? So would you have to buy a 4-channel (or whichever one) amplifier to power my speakers? That is, if my battery won't suffice in providing sufficient power to my speakers.