you may consider trying to bleed the master master cylinder at the lines.
fill the master cyl and have an assistant pump the brakes until the pedal comes up and is firm, while holding the brake pedal then crack each fitting one at a time at the master cyl line fittings to let the air out, then tighten that fitting and move on to the next fitting and do the same.
once all the lines are bled, then let the brake peadal up.
do this until all the air is gone from each line.
once all the air is gone from the m/cyl lines, do the same for each of the wheel cylinder/calipers, pump the brake pedal until the pedal becomes firm, open the bleeder, once the fluid looks clean and bubble free, move on to the next wheel.
i generally use 3/16 vynyl hose from ACE hardware as it is clear and you can see the fluid condition and any bubbles in it.
if you can't find an assistant, you can try gravity bleeding, by filling the m/cyl reservoir, and cracking a line bleeder to let the air out, this takes a while but it works, just keep the vynyl hose below the level of the master cyl so the fluid can escape.
however if you have a miti-vac transfer pump or hand operated pump, you can vacuum out each whl cyl or caliper.