Keep up the good work John. I'm still watching your progress. Follow your plan, run regular and you will reach your targets.
I've got a trail marathon (http://www.trailmarathonwales.com/) in 2 weeks around Coed Y Brenin. Really looking forward to it. After that it's back to some Ironman events.
Have you and Louise considered some Parkrun's as 'test' runs? We have loads around Manchester. I use Platt Fields (South Manchester Parkrun) as a test run to see where I'm at. Wythenshawe would be a good option for yourself. Jog there, hard Parkrun, jog back. Quality Saturday morning workout.