Some internet searching should get you the answers you want, dude. But, here's my opinion since you posted this.
4 tracks is a bit of overkill, especially to attempt to replicate properly live, if that's something to be concerned with.
I recommend two tracks maximum, and a common but often great way to get the sound you want is as follows:
1. Downtune - I nearly always play in Drop C or Drop D, as it always works best with my selections and the music I make. If you want to get really Djent about it, get a 7 string and B tune. Even on higher treble settings it's pretty damn thick with the right distortion filter.
2. Mic -ing - I see you use Shure, which are a pretty decent all around brand for what you seem to be doing, but I personally prefer Sennheiser. Better dynamic range I think, great prices for the budget recording artist, and pretty versatile between recording, PA and live, and feedback filtering.
3. For amps, depends on your style, the song, the other instruments or sounds, etc. There's no real magic formula except what fits that situation, etc, and yes, indeed the amp. (I love Blackstar. Highly recommended for price efficiency) (Though I think we all want an analog Marshall Tube amp. <3 Definitely gets a girl rocking (in my case)
All in all, you want everything balanced, and too many deviations from a great dynamic range can cause popping, and unexpected recording feedback when mixing.