I think I'm just going to have to give it go.
So here's my plan. WOD's in the morning, ramp up runs on alternating days during the week in the evening, and a long run on Sunday. My GF is managing the run lengths based on an internet ramp up program. They're pretty accessible on the web.
BTW, 5'10" 200lbs, 23% body fat based on a Tanita scale. Not your typical endurance build...