Future running partner.
Run to Win25 Marathons, 17 Ultras, 16 States (Full List)
I'd play it by ear. I think you have a pretty good plan for building up your mileage, and if you get overly tired or sore you can always cut back a little midweek.
Generally speaking, I think that if you maintain your midweek runs and increase your long run by 1 mile per week with a rest week every 4th week, you will give your body more than enough time to adapt to the new stresses. Just be sure to take an easy day or two after your long run.