I'm using the kernel from the initial DJ05 release here:
[RELEASE] DJ05 rom, kernel, radio
I'm using it with the stock DJ05 ROM that's been highly debloated - I've removed all the Verizon crap, all the DRM (digital rights management) stuff, since I don't download any music/videos on the phone, I even removed all the Bluetooth apps/files, since I don't use any Bluetooth accessories. I'm getting upwards of 3 days on a charge, with modest use, and a solid 2 days with moderate use.
Yea, I've also noticed rather poor battery life on the StupidFast kernels, and I've steered clear of Voodoo since I don't use my phone in a manner that Voodoo would be useful.