First, congrats for having that 2 BTC, protect it at all cost. Yes, there will be a lot of drama surrounding the decision. Others think that it could make or break this market. If I'm in your shoes, I will wait after the decision. Why in case of a rejection, the price could go down so that is a perfect buying point.
It's really up to you, in case the price go to bottom and you have the funds then I will go full 1 BTC hard. But if you don't have enough money, then maybe half now half later is a good strategy, its a win-win actually.