If you can adjust the output of your

compressor to 125 it would help alot.Adding the air tank in line wil just let you run a little longer before running out of air.
Murphy is always around when you least need him,i always expect him to show his ugly mug when i work on something.I just plan on the worst and am happy when things go right.LOL
A hint on the lug nuts.They do not heed but 60-80ft-lb of torque.I would set your impact gun to a middle setting when putting them on,then try to break them loose with your tire iron.Many times shops will use a impact on the lugnuts and when you have a flat you can not break them loose.
Mark