Ok, so, I've got a ton of packs and add-ons, and the HRP and EDuke32, and everything. There's a snappy of the temporary folder where I'm keeping all the packs and files before I start un-zipping and installing attached to this post. Here's a list of descriptions for each file:

1) Ignore: This folder is the un-zipped version of #6
2) Latest version of WGRealms 2: Siege Breaker. Apparently it's standalone, but can be used with HRP/EDuke32
3) HRP 4.0 from duke4.net
4) Duke It Out In D.C. GRP file. For use with EDuke32
5) D.C. HRP pack, for use with #4
6) Latest DukePlus pack
7) Latest version of EDuke32
8) Music from the PlayStation version of DN3D, in ogg format. More info here.
9) Updates HRP from duke4.net to v4.1.1
10) Map hacks to go along with #9. I'm pretty sure #9 already includes these hacks, but I want to install these from this file just in case.
11) Nuclear Winter GRP file.
12) HRP pack for Nuclear Winter
13) Ignore: I know what this is and how to use it ;)
14) Duke Caribbean: Life's a Beach GRP file.
15) HRP for above.
16) Complete WGRealms 1 pack. As far as I know, this is NOT standalone, and must be used in conjunction with either a DN3D 1.3d GRP file or Atomic GRP file.
17) Bewbs. For use with HRP from duke4.net.

HOPEFULLY, this is enough information to help me compile a comprehensive, step-by-step unzipping and installation order list. I didn't count on being overwhelmed by the enormous amount of content to sort and create folders for when I started grabbing all this stuff.