Ok Carmel Cowboy, I will definitely give your plan a try.
It's a start brother. Always make adjustments as needed. Remember the most important part of phase one is learning the proper technique and with 3 days a week and 12 reps per set gives you enough practice with each exercise. In phase two when you are doing the split up routine add two other exercise per body part. For example on chest back and ab day start with flat bench press which you learned in phase one and then add incline press and peck deck machine to the chest workout. You will need someone to show you these exercises. Do you know your body fat percent?