I will not be messing with the Signal meter or 3G/4G/LTE/Sprint Spark icons. I know that tends to break SMS and triband LTE...though I do have the Disable Sprint SystemUI flag module installed and working.
I've already got the pngs and xmls ready to go. I just need to figure out which APKs they need to be flashed to as I am used to working on Samsung Galaxies which use only framework-res and systemUI (and maybe TWframework-res). Plus 4.4 with Sense 6 presents its own special set of problems modifying/theming the stock rom, so I've read.