I read that was what they had planned, but after some time I also read rumors about adaptating all routes. Well I'm not sure what they'll end up adaptating, but... "Emiya" feels more like Unlimited Blade Works than Heaven's Feels, not sure if you get what I mean. Dreaming is free after all.
Health is really important, I really look after my own health. I do everything you mentioned, and I don't spend too much nighttime on the computer. However, I do overkill myself sometimes trainning, not that I mind though.