Hey Steve! I’d throw the vitamins down with food. Less chance for stomach upset and I think you partition those nutrients better with some of the co-factors in foods. NewChapter is a supplement line that really believes in this and sells all its supplements co-enzymated. I doubt if it is a big deal either way however. I would for sure save the fish oil for a meal with plenty of fat. You will certainly minimize absorption slugging down fish caps on an empty stomach.
Keep us posted on the fasting!