I was wondering where you went.

Glad your back. It is a good thing you got that ten gallon. You may have to upgrade to a bigger tank in the near future though. You are on the right track with the water changes. The only thing I disagree with is the filter change. Goldfish tend to be messy and you will want superior filtration to keep them healthy. My suggestion would be to change it at least every four weeks. Also, if you want your fish to possibly grow faster, provide variety in the fish's diet.