Car missing hesitating or not firing

When entering the highway or up an incline any situations that require a rapid gain of acceleration or power the car will not perform as needed. It will act as if it not firing correctly or missing and I will have to let off of the gas pedal and try giving another attempt to pick up speed quickly and it will seem to clear but will still do it. Whatever it is has gotten me in a few close call as by not responding the way I need or require. I have replaced spark plugs and wires. I have replaced all oxygen sensors and have cleaned idle air intake valve. So I am left with TPS, MAO and distributor or coil packs. Is any one able to steer me in the direction I need to be in on this? Because I am a beginner shattered do it yourself guy and work payday to payday and do not have the resources to handout a buck and am half for these sensors and would be blessed if anybody can instruct me on how to loop hole this until I have more assets to work with.