You don't worry about over doing any of the vitamins?
This may be a silly question, but do the supplements also include minerals?
Most vitamins are water-soluble, meaning the body will excrete what it doesn't use (the B vitamins, C, etc. for example), so I wouldn't worry too much about those. The fat-soluble vitamins, e.g. A, D, E (and I think I'm missing one, K perhaps) are more likely to build up in the body. Those are the vitamins that are usually found in the organs.
Too much of any mineral can also be a problem, depending on the mineral. But you're going to make yourself nuts with all of this. Keep in mind, too, that unless the raw you're feeding was free-range, organic, etc. etc., that they may be deficient in certain things, too. I would suggest that you just do the best you can to get the ratios right, and go with a supplement that you feel comfortable with using, e.g. Alnutrin (which seems to "keep it simple.")
Just my
. I'm certainly no expert.