Jay sankey is an incredible example. His hands are tiny, definately smaller than yours. Yet he pulls it off brilliantly in many effects. Certain effects are absolutely brilliant, which utilize palming, I would never pass them up.
I'd look into the one handed top palm. The beauty of the one handed top palm is that you have your other hand to completely misdirect the spectator. Its so deceptive, you can literally show both hands empty calling attention to it, table the deck and then have the card in palm. Specs don't know you're going to palm off a card. With well timed misdirection and a well structured routine I think you could pull it off.
Out of curiosity, during the actual action of palming off the card, are windows supposed to show? For me I have windows during the action of popping the card of the deck if you scrutinize my hand. Is this fine?