It's def a program to be followed exactly as it laid out, both the nutrition and routine. So maybe wait until you can find the time to commit 100%. It's a great program though, can't say enough about it.
As far as nutrition goes try not to over complicate it or nit pick to much. I use to avoid carbs like the plague and while it "worked" I found it extremely hard to control cravings for sweets, bread etc... and would eventually binge and feel like crap. There was no balance and maintaining a low carb diet was daunting.
Now with that program I did, I ate 6-7 times a day with each meal consisting of fist size portion of carbs and a fist size portion of protein, no dairy, no sugar and fats came from the meats. I never counted cals.... Two 20min cardio sessions a day at very low intensity. It was a lot of food and a lot of carbs but the fat melted of of me. The best part is I had zero cravings for sweats etc during the entire 12 weeks.
Now on my bulk I kept the diet the same and just added back some dairy and good fats. I've put on some good size and the fat gain has been minimal. Bottom line is I'll never do the low carb thing again, I might lower them here and there but they'll remain in every meal I eat.
You need to find what works for you and one that isn't hard to maintain. If you feel like you're on a "diet" the greater chance that you"ll cheat or give up on it.
http://forum.bodybuilding.com/forumdisplay.php?f=13 Read the stickies here for some good nutrition info and you should be able to find a mix that could for you.
As far as an eight pack this usually come down to genetics, it's literally impossible for some people to get an 8 pack some can't even get 6. Just work on getting rid of the belly fat and see what pops up. Don't kill yourself with ab exercises. I worked abs maybe once a week and was shocked to find an 8 pack under their. I'll thank my genes for that.