The small can of T-9 that you have will be plenty, and you're using it for its best use. It was designed by Boeing to protect metal against corrosion. It's mainly paraffin wax in solvents, and dries to leave a wax film.
It's not a bad lube, but the motion of the chain wears the paraffin off faster than other lubricants. Inside a frame, that nice layer of wax will be undisturbed and smart as paint.