Take the money. These things are 10x bets. You won't be sad that you got 7.5x instead of 10x (which is what happens if you take the 25% of your stake off the table). If you flip it, you'd have 10x instead of 7.5x. It's not meaningful.
Each time you get money you get to deploy that elsewhere. If you have super risk tolerance, push $25k cheques as seed.