A while back I did David Roth's Standup Copper Silver routine from "Coinmagic" for some friends. It's a great routine but I didn't get much reaction. I learned afterwords that no one could tell that the coins had changed. The light was a little low and, for the audience, the copper and silver coins were not nearly different enough visually.
So I reworked several of my coin routines, including Spellbound, to use poker chips. They are so much easier to see it's incredible. And they're still very ordinary, everyday objects. I think you'll be very glad you have gone down this road.
Just a suggestion, but instead of changing the final chip into an unnatural object like a jumbo chip, why not change it into a real coin? This would provide a climax both visual and meaningful. Or perhaps a folded bill (or better, a roll of bills).
Here's something fun to play around with: try to create a version of Threefly using one red, one white, and one blue poker chip. I have one that uses two double-sided chips. The handling is not entirely practical but it is doable; I'm sure a practical routine is out there.