I will probably try out a SmartCoach plan. I am usually not a fan of Runner's World's SmartCoach, but I plugged in my data and the plan seems reasonable.

Week 1 (out of 35!), 5 runs:

Tempo Run: 6 miles, including 4 miles @ 7:02
Long Run: 13 miles (wow)
Easy Runs: 3 + 2 + 2 miles.

Easy and long runs @ 8:22.