No problem on the questions.....yeah, pull whatever apk's you want and use 7zip (or whatever you like, I use 7zip) to put them into the /system/app folder, before putting the rom zip onto the sd card.
You'll have to be on a fresh copy of 596 deodexed.....if you're on 340 & rooted, use D2 bootstrap and do the 2 part method to get onto rooted 596. Then, using D2 bootstrap again, flash the 596 TBH Deodexed zip. After that boots once, go back and use D2 bootstrap again to flash the GB_596_Mod3 file. The Mod3_corp just allows you to use a corporate e-mail where the other zip doesn't have that included.
Seeing as VZW/Motorola just released their latest version of GB for the DX (.602), I'm sure someone (hopefully) will have a debloated version soon.