By increasing the number of prizes, you can be sure that more people will participate in this month's predictions to be able to win and get more prizes, but it is true what you said is that it will be more difficult than the previous prediction, moreover, there will be more of our rivals to be able to win prediction this time.
By the way it's good if you have two prediction options because it will give you a better chance.
Maybe I will also do like you where I make two prediction options because in the previous predictions I didn't have a good chance of winning
While the prediction page is still at page 1 and you have more time to give your prediction, you can analyze more to give the bitcoin price as your prediction. You can consider this prediction as fun but do not have a big expectation to win because we will have many rivals that are ready with their predictions. Moreover, the previous people will also join in this prediction.
You still have at least 6 days left to give your prediction because the first prediction will close on the 15th of April, so do not be late if you want to give 2 predictions at this prediction.
As you are saying that increasing number winning prizes will for sure increase number for your chances to increase your winning chances but I will say that this gambling algorithm don't work that way. As when there will be more winners than there might be more traffic and it would be more difficult for us win prize and probability of winning could increase of decrease by a lot of factors.