Hi there! We gave our kiddos yogurt at a young age and they still love it. We did not see any lactose issues but it's something to watch for. We also did cottage cheese mixed with applesauce or with yogurt - calcium is a great thing for kiddos :)
Budget wise, and this is just my opinion, but we didn't do babyfood finger foods. We literally made our own babyfood from what we ate and it saved us a lot of money! We cooked peas for example and smashed them up, same with green beans. We cooked a whole chicken and added water or breast milk to is, put it in the food processor until it was the right consistancy then put it in ice cube trays to freeze. Each cube was just about the same amount as those little jars :)
D.