Need help with 2006 GMC Yukon

I have a 2006 GMC Yukon that I am pulling the interior out of to replace the carpet, recover the seats, cover the factory trim, and lay down sound deadening in preparation for an audio build out. I have 3 sets of Polk MM 651 6 ½" components and a set of Polk MM6501 6 ½" coaxials. I was planning on putting 2 6 ½" in each front door and 2 tweeters in the a pillars. In the back doors I have decided if I want to just use the Polk coaxials in the stock door location or if I want ro use both the coaxials and components in the back door and place the tweeters either on the upper door panel or in the B or C pillar. I was planning on a 4 channel with around 1000 watts on the mids and highs and either 2 Sundown SDDN 15s, 2 Sundown XV6 15s, 2 DeafBonce 4515s, or something comparable with 2 4k or 4500 watt amps strapped on the pair in a ported box behind the 2nd row captians chairs in the rear cargo area. I realize I will also need an upgraded alternator so I was considering a 340amp and a couple lithium batteries in the back in addition to the Optima battery under the hood. I haven't done a stereo this big in 12 or 13 years, the last one was 4 Treo SS 12s firing up in an 8 cube box with 6 aero ports across the bottom fireing back with 2 strapped MTX 81000D and a big 4 channel in a 1999 Tahoe with Alpine Type R mids and highs. I obviously am planning on more mids and highs, a lot more power and electrical upgrades. I've had stereos in everything since but it was 1500 watts total on the mids and high with 2 Image Dynamic 12 in a sealed box in a Trailblazer SS or a 1000 watt JL Audio 13Tw5 with a 500/1 and a 400/4 on Infiniti Kappa Perfects in a Yukon XL. Things have changed a lot and I want the best advice from people that have been messing with audio systems of this caliber. Thank you, sorry for the novel post.