I am going to give it a try. My question is what is the best way to get started? I've been working out for 4 years and here is my current program on Atkins:

Sunday: Lower Body Workout (I'm not soft on myself, I still feel it on Wednesday.)
Monday-30 minutes HIIT cardio
Tuesday: Upper Body Workout-(work chest, shoulders, tri's, bi's, and back) 2 exercises per bodypart/3 sets each to failure.
Wednesday:30 minutes HIIT cardio
Thursday: Repeat of Tuesday
Friday: Either 30 minutes of HIIT cardio or 45 minutes of low/medium intensity cardio (depending on energy level)
Saturday:Upper Body Circuit-1 exercise per bodypart/repeat 5 or 6 times

Should I start carb-up this weekend or wait until next weekend? If I start it this weekend, I should start it on a day of weight training not cardio, right?
Is it best to start with a 12 or 24 hour carb-up?
I was thinking of flip-flopping Thursday and Friday this week so Friday is a weight day, then do the carb up for 24 hours and start fresh Sunday with the following workout:

Sunday: 15 minutes cardio, Lower Body
Monday: 15 minutes cardio, Upper Body
Tuesday: Cardio
Wednesday: Cardio
Thursday: Cardio
Friday: Lower and Upper Body circuit, start carb-up
Saturday: off

How does this look, what would you change? Also, how intense should my cardio? Sorry for all the questions, I just want to have a plan in place before I get started.