C'mon, guys. He posted on the beginners forum and deserves a legit answer.
Despite my own beginner status, I'll hazard something hopefully helpful:
First and foremost, the cardio/Insanity won't kill you, but it's generally not considered optimal for strength training purposes. The key for you will be monitoring your strength gains and adjusting accordingly. When I was barely squatting jack crap, I was able to run 40 minutes a day no problem and still make gains. Now, I'm about 40 pounds heavier bodyweight-wise and squatting much more than I formerly was--I've cut my fasted cardio in half to about 20 minutes and have cut the intensity to basically a slow jog (8:30 mile or so). Just adjust what you're doing with a focus on making progress on your lifts and use common sense--when your bodyweight increases, stuff you used to do like running becomes far more stressful on your joints. You need your joints healthy to lift. Priorities. Your body will adjust to the demands you place on it, but bear in mind that adjustment takes time. If you gain a bunch of weight and are pushing much heavier weights in a short time span (i.e. you're experiencing newb gains), then your body is going to have trouble adjusting.
If you want to do a 4 day split and are committed to this Insanity junk, then I would recommend going for 5/3/1. If you want a 5 day body part split, check out KingofBeef's "Do this Routine" thread, and if you're looking for 6 day splits, you can either add a bit to KoB's routine (perhaps ask him what a 6 day routine might look like) or look into more exotic routines like BBB. No matter what, though, get on a program and focus on lifting heavier weights from week to week. Start keeping a log of your weights and diet.