What do you think about my running plan?

Welcome!! I'm with Hyper as I love all this gadget stuff, but don't let it dictate your training. That being said, I used the book Heart Monitor Training for the Compleat id**t (spelled wrong intentionally) by John Parker. He does a great job of explaining what zones to train in, and what the numbers mean. The most important thing I use my HRM for is to make sure I'm doing my easy days truly easy so I have enough gas for the hard ones.

Starting out, you don't want to worry too much about your time/distance etc...that will all improve rapidly as you build a base. As everyone else mentioned, the Couch to 5k program is great.