Jared, perform an isolation test to get you i the right direction..
Isolation test:
Clamp both flex hoses to the front calipers,I use plastic hose clamps made for clamping brake hoses,(vise grips can be used but be careful dont get macho and clamp to tight)
Clamp rear flex hose(one hose on our cars,two hoses on newer cars)
Apply brake pedal,the pedal should be as hard as a rock. If not, Master has external or internal leak.(replace master)
If pedal is hard have someone remove clamp from rear hose while you apply slight pressure to brake padal. When clamp is removed pedal should drop about 1/8 to 1/4 inch. If pedal drops alot,problem is in rear brakes,leak,air ect....
If pedal remains hard replace clamp and repeat with right front wheel and left front wheel in that order, always replace clamp before moving to next wheel.
This procedure with get you to the problem area 99% of the time.
_________________________