I used electric windows from Nu-relics
http://www.nu-relics.com/
They bolt into the door in the same factory location as the OEM manual window regulators. They are not cheap but made very well and specifically for our trucks.
I also went the route of 1/4" smooth side glass (no metal trim). The key is if you do away with the metal trim around the glass make sure you get C-channel that works with the narrower 1/4" glass. The stock C-channel will not work.
Good luck
Marc