Great advice, thanks!
I am doing my training with a local running store club, so my workouts will be mostly "planned" for me. We meet twice a week with Saturday mornings being our long run. I won't be able to make the other weekly run most of the time, so plan on just doing that day's "run workout" on my own. Then I was planning on doing a 3rd run on my own (an interval workout or hill repeats). The long runs start at 4 miles I think, then gradually increase up to 20 miles. The longest run during the week is most likely no more than 6 miles, so I am not expecting to be doing a lot of weekly mileage, especially the first month or two.
In addition to the running, I would like to do my own Crossfit workouts 2-3 times a week, and maybe spinning once a week as cross training.
I will most likely eat a Chipotle bol on Saturdays after my long runs

What's your opinion on eating right away upon finishing a hard run/workout? I'm getting mixed feelings... beneficial for preserving muscle, but I also want my body to burn my fat stores!
I trained for a marathon 3 years ago at 200lbs and didn't lose any weight (instead I got a stress fracture in my foot a month before the race), so I am really hoping this time around I can lose the fat! In that regard, do you know how long it takes the body to turn to fat for its fuel source? I've been slacking on the primal/paleo diet due to all of the temptations now with Christmas coming, but I plan on going full force on January 2nd by starting the Whole 30 challenge!
Thanks again!