Some advice for all of you is this.
For your power you want a certain amount of power per hour, these figures being: 85% at 1AM, 70% at 2AM, 55% 3AM, 40% 4AM and 20% 5AM. If you stick to these figures or around them you should be fine power wise, obviously if foxy is a problem then you're going to want to conserve your power. Bonnie and Chica should not be checked on, they always have sound cues for when they appear at your door so the only two animatronics you should focus on are foxy and freddy. Foxy should be the main focus until freddy does her 3rd or 4th laugh, to at which point you will need to intertwine between the two. Flicking the camera up and down every 3-5 seconds or so will help to conserve power but keep an eye on freddy for longer.
Final thing. If either bonnie or chica is at your door for over 30 seconds, end the run, especially in the later stages. The amount of power they consume if you're also trying to stop foxy and freddy isn't worth it especially with bonnie as you can't tell if she's gone or not through the lights. Saying that, bonnie ALWAYS goes back to camera B1 when leaving your door so have your camera preset at that and then switch between foxy and freddy in the same check.
I know a lot of you will already know all this by now but hopefully it'll help a few of you.