I always rinse my sand unless it's live sand, ls
doesn't do much but it still has some bacteria and is already pre-cleaned.
Others of ccourse like florida crushed coral, right on the front in big letters, states that there is no need to rinse. Well rinse it once and your going to see why thats a lie. When I did it it turned the water white.
And like I have told many many mnay people, 10 gallons are not hard. You have to know what your getting into and do a bit more research beforehand. In the long run if you start out with a 10 your going to go nuts, not many fish can be kept in a 10 gallon, and your going to want another tank right away.
And unless you have a reef 10 gallon or something it does not need to keep an absolute "vigilant" eye on it. Mine kind of takes care of itself. My hermits help out a great deal, the clean constantly. Since you have the stuff already I say go for it. But if you didn't save yourself the trouble of buying the 10 and everything and getting bored with it and have to buy it all over but this time for the 55 you've been wanting since 2 weeks after you set up the 10 gallon.