Do it!
This morning I just finished week 7 run 1 and I feel amazing! I ran continuously for 25 minutes and never dreamed 7 weeks ago that that would be possible. Like a lot of people have said, the great thing is you can go back and repeat a week if you find it too fast. For me a 30 something who hasn't done a lot of exercise for years it is paced really well. At first just running 60 seconds left me out of puff, but it increased so gradually I felt able to stick at it. Once I began to feel fitter it even felt too slow, but it's paced slowly so as to give your knees time to adjust and avoid injury, so I didn't jump ahead.
I found the music a bit repetitive though, so I copied the schedule off of the website and put the timings into the interval timer on my phone (I have a really old basic Nokia phone and was surprised to find an interval timer in the organiser, so I think most phones must have one) and then just listened to music or podcasts and followed the beep intervals on my phone, which I found much better. I have a print-out of the runs on my wall and tick them off with a big coloured smiley face each time I do one and it feels great.
I really hope you go for it rriot girl. When I'm having a bad week SH-wise, it's great to look at my run programme on the wall and see that at least I am progressing in one area of life!