A few points on this. I never really understood the IM thing. (**EDIT** Okay, I do get it, but it's floored IMO) If you can eat whatever you want during the hours you CAN eat, then you're not guaranteed a deficit? I could easily eat 3k calories in 8 hours. Therefor IF doesn't prove a deficit works because IF doesn't guarantee a deficit. Carefully count your calories to ensure a deficit, but eat whenever you want. Also, yes it's the only realistic way to lose fat, but don't forget the deficit comes from 'out' being greater then 'in' and all OP is changing is 'in'. (See below)
Definitely this. PyschoS didn't get when I said in the weight loss thread that just dieting is rather lazy in my books. Get outside and exercise. Limiting your calories in might make you loose weight, but getting outside and exercising will make you loose weight AND get healthy. Surely here being healthy is the main goal, but OP has omitted the bit that actually gets you healthy?