My advice is keep it as simple as possible. I wouldn't worry so much about fasting right now until you get your eating dialed in and this is my advice for eating: Just eat real food, as much of it as you want. Fruits, vegies, lean meats etc. Reduce/stop junk food/sugar intake and most of your skin issues will eventually clear up.
In fact I wouldn't even worry about fasting until you know how to eat right and I would not even worry about how many times a day to eat, just eat when your hungry. No point in starving yourself and at 5'11 158lbs I think you really should not be worrying about fasting and leaning out unless you really want to look like the next anorexic games competitor.
So, eat real food, pick heavy shit up, keep the metcons shortish and you'll be good.