I dare not say I'm a professional in battery saving, but I did break the 8 hour SOT on N4(minimum brightness of course).
Let's see, I only use 2G, because I only need internet for Whatsapp, and I greenify every single other apps.
You might undervolted too much according to your signature. -200mv might reduce heat but consume 1.2-1.5x more battery than normal voltage, its hard to explain, but its the truth, try -150 then -100.
Since you're on Franco, reduce the vibration a little, as for scheduler, I personally prefer Deadline on 2048. Governor definitely interactive, and freqs at 1.2Ghz. Because personally I dare-say at 1.2 Ghz you can run most apps almost instantly.
Like the second post said, Off wifi, GPS and bluetooth. Under settings > location settings> one is GPS and another is google location, off both. And you might still even have NFC on? No idea in this.
Download an app called build.prop editor or kernel tuner.
Modify build.prop a little. Add in pm.sleep_mode=1 and change the value of wifi.supplicant_scan_interval to 600 or 900.
Disable auto brightness and fix to something you like but below 50% .
Name: Nexus 4 Mako
ROM: BrainMaster JWR
Kernel & Tweaks: Franco/Trinity
Devices I once had(Or still have):
LG Nexus 4(present), Samsung Nexus S(present), LG Optimus 4X HD P880(sold), HTC Sensation XE Pyramid(sold), Samsung Galaxy Wonder i8150(spare)
Devices I have minor experience about:
Samsung Galaxy Y, Samsung Galaxy i9100, Samsung Galaxy i9100G, Samsung Galaxy SIII Mini i8190N, HP iPaQ500(retired and yes its an antique)