Keep an eye out for the replacement parts, but also keep an eye out for a plow with Super Chief bottoms that you can cannibalize.
Don't pay more than $100 per bottom for the plow, and if you do find one and have a few spares, find me. I'm from just North of Arcade (North Java area), and I visit there often. I'd gladly take whatever you didn't use off your hands because I've got a Little Genius and a Cub plow that need new wear parts.
BTW, you'd have a rough time pulling a trailer plow with your 100. Mounted plows transfer the downward pull from the bottom to the tractor, increasing traction. Trailer plows do not, so the tractor has to pull the plow with brute force. Even though a Farmall H doesn't have much more horsepower than a 100, it can pull a 2-14 trailer plow easily because it's so much heavier and has much larger tires.