Well, finally got the axle swap/ bearing repack done late last night. Haven't driven it yet because I couldn't get the zip ties tight enough to keep the inner boot from slipping off (probably because I had grease everywhere) so I'm taking it to a trusted shop to have them install some real band clamps. Also going to have them replace the passenger side lower ball joint as the boot on that is split. I tried to do the swap, but that sucker just did NOT want to release no matter how much I cranked down on my cheap puller and banged on the nut/bolt.
Thanks to everyone for answering all of my questions and holding my hand through all of this.
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong, it usually turns out to be impossible to get at or repair."
-Douglas Adams, Mostly Harmless