I work at toyota dealership. put toyota dot4 in everything. as far as toyota is concerned it is interchangeable. dot5 to 3 is not.
sounds like a master leak, one of the old o rings has been unsettled with the new fluid. so its leaking past into one of the other lines.
Edit:
Test brakes.
Hold your foot on the pedal hard, if it starts sinking, its a hydo leak.
If it does move, turn the car on while your foot is on the pedal, it should sink a bit then stay solid, if not its a booster leak.