The only issue you will have with a 10gal tank is it may not be able to supply enough propane. As you draw from any tank the liquid propane evaporates, as this happens it cools the remaining fluid/vapor. Drawing too quickly can cool the tank to the point that it cannot supply enough pressure. Not likely to happen with a grill in the summer, but in the cold outside during the winter and the small tank size it is possible(likely?).