Pair of Quarters, Pair of DimesG 40

This will require replaying levels and grinding to attain. When choosing portal master bonuses, always pick one that gives you more Portal Master Exp and always choose anything that gives you extra wish stones. Then replay any checkpoint that has a few chests in the beginning, get the rewards from there, and restart. You will amass stones and exp this way, skipping almost all gameplay. After you have gotten all the hats out of the way, your wish stones will be all cash or exp. Just be sure to switch out to someone who needs the exp so you're not 'wasting' it on a maxed out figure when you turn in the wish stones.