I would be careful with the people vitamins, personally. #1, they usually contain copper, and you want to have snails, so, that's not a good idea. You could do baby food, sure- just read the labels to make sure you're getting one that is only veggies and water. Some of them have a bunch of other stuff in them. If you couldn't find peas & carrots in baby food, you can do pea baby food and canned pumpkin for the beta carotene- which are both also pureed. I use the frozen bags of veggies because they are much cheaper, and I tend to have them in the house for me to eat the rest of the bags, anyways. (LOL) You can still use the pre-soaked API pellets for a protein/vitamin base and bulk it up with the added ingredients. You really don't have to worry about it being less protein from the added veggies. Gelatin is an incomplete protein, that only lacks tryptophan to complete the amino acid chain make it a full, complete protein. Add spinach, garlic, broccoli, or a bunch of other veggies that contain tryptophan and you have a complete protein once again- so your gelatin and veggie combo added to the pellets do make a fully useable protein source, as well. So, if they sell spinach baby food- that would be a good one to add! Your other additions sound good, too!