If I remember right, the rule of thumb is a 50cc engine running wide open will burn about one once of fuel a minute.
A 16 oz. tank will work fine. If you are 3D flying you are never really wide open, so the 16 oz. tank can take you 15 minutes.
Do your ten minute flight, land and check what fuel you have left.
Then you wll be able to gauge how much fuel you burn in a certain time with your flying style.
I have a 32 oz. tank in my 100cc plane.
I have flown 20 minutes and after I landed I was just under half of tank.