Porter cable detail gun

I am looking at using the porter cable detail spray gun to spray Transtint dye followed by Target tinted USL. I am looking at spraying mainly cabinet doors and drawer fronts, and 50 in by 22 inch shelfs. The biggest thing I was going to spray is a dresser top that is 100 inches by 20 inches. The porter cable gun comes with a 4.2 oz cup, will this be big enough or is there another cup I can buy and put on there? I have a porter cable pancake compressor so that is why I am looking the detail gun.