Well, as I say, I use very few knives for cooking. I don't eat red meat or poultry, so my needs are limited. Sounds like you're on the right track for a minimalist set if you deal with critters with bones.
Here's what gets used in our kitchen:
1) 90% of all my cutting is with the Santoko - doing prep work on veggies, mostly. I also have a nice Chinese cleaver that I almost never use - the blade on the Santoko is tall enough to work for most things.
2) A decent bread knife
3) For slicing and carving, I have a nice Laguiole carving knife and fork. This gets used only a few times a year, for very formal occasions or dealing with Really Big Fish. It was a gift, and I wouldn't bother with it if I had to buy it myself, I'd buy a Japanese sushi-style knife.
4) A vegetable peeler - I almost never use a paring knife, as a good peeler is so much faster and easier. If you have a handful, your guests can make themselves useful. Spend the money you would have spent on some fancy knife set on an extra prep sink
5) Oyster knives - here's where I went wild. I've got half a dozen good commercial-grade ones. I live next to an incredible oyster bed, so when I have company over, and have oysters, I issue everyone a knife, and we get to shuckin'.