what are the protein loads in each of those products?
Actually just went and looked at the Nvs on the site, you are massively undershooting on the protein you need more. The vits and minerals wont be the main problem, but the protein requirement is nowhere near what you need to maintain muscle stasis.
You are getting 11g protein from a shake
and 15g approx from each bar, taking you to max 41g of protein throughout those meals during the day. Even if adding in another shake you're only looking at 52g protein. If sticking to 4 shakes then only 44g protein.
You should be aiming for about 60-65g protein to stop yourself getting sick.
Its not just about calories or vitamins, you NEED protein too.