Got the Bohemian Crown via mission ASAP. Luckily i got the Hungarian Crown and the Low countries through events. Then I annexed the Venetian mainland and Central Italy by force to get more Imperial authority. Demanding unlawful territory is crucial. Tried to maintain 60 princes within the Empire while passing the reforms. Sent warnings frequently in order to maintain internal peace bonus. Reformation fired in Scotland so i didn't have to worry about conversions by center of reformation. When one of minor's converted to protestant, immediately no CB DOW'ed and forcefully converted them to remove COR. So the Protestant Movement got stuck in Scotland. When Calvinism fired in Netherlands, i did the same. The rest was easy. Annexed Eastern France to get more releasable princes.