Stay up late and make a pot of coffee

There is no easy way to prep a frame down to the metal. The quality of the finish is dependent on the amount of work put into the undercoating/filler/sanding. Even if you were to sand blast it you would still need several coats of primer to make a smooth base for the top coat. You can still get a nice finish, just sand the pitted and chipped areas down primer sand with 400-600 grit and spray a couple of color coats on sanding with 1200 grit in between. However none of the above will be dry enough by tomorrow to install components.

Good Luck