with as little time as you have I would be trying as many spare parts as I could... mainly afm, and tps.
obviously its not compensating for you pressing the pedal by adding fuel, so it doesn't know your pressing the pedal or doesn't know its getting air... If I remember correctly the car won't run at all with a bad MAF. Have you tested the tps sweep for dead spots? Tested resistance at the beginning and end of the sweep?
Are you 100% sure you don't have a ginormous vacuum leak?