http://www.liveaquaria.com/product/aquarium-fish-supplies.cfm?c=830+882
IMHO a dwarf gourami is really already pushing it as far as if it's appropriate for a tank that small...I would not add two. I would only keep one in a 10 gal with a minimum of other tank mates so it has plenty of room. Even a dwarf is a pretty large fish for a 10 gal tank