Thanks to all for the comments, I have alot to think about as I go forward. To specifically answer a couple of questions, mo'pak asked why the 400's at mile race pace. My thinking on this is to include a day of speed work to maintain what speed I have for 5k's, which I prefer to run. Interestingly enough, your progression run pretty much is how I currently will run a 10 miler. It takes me 5k to just start getting warmed up, so it is very easy, the next 5k is probably at marathon pace since I am a very slow marathon runner, next 5k probably a little slower than 1/2 marathon pace, but increasing from the prior 5k, and I generally finish strong in the last mile to 1.5.
Alan, I am not sure why you are refering to the three intensity days per week. The long run is run very easy and the middle distance at an easy to moderate pace picking it up through out, but nothing crazy. That only leaves the mile repeats and the 400s for intensity. (And if you saw the mile repeats you might not even consider them intense). I agree, buy all standards that the 16 mile run on a week with 40 -43 miles seems excessive by all published commentators, but I am a believer in the long-run and think 16 is the right amount to race a 1/2 marathon. It fits around that 2hour 15 minute max where some believe you don't get much benefit from running any further. Also, I monitor my heart rate during all runs and workouts to determine if I might need adjustments and an extra easy day.
In regards to peaking, the current mileage is only about 30 with the miles and long run to be increased. I think,(but I could be wrong) that as long as I continue to add to this mileage and increase the number of mile repeats, I won't peak. I hope to plan a peak by backing off for about two weeks, by cutting the workout to about 75% but increasing the pace a little.
It is a experiment for sure, and I will try to post progress, disappointments and success, if any as I go.