Thanks y'all. I ended up ordering a 25 sheet box of the Arista EDU stuff. It was the cheapest film that I could find for my trial runs.

In the future I'll probably order some FP4 in all formats because I'm trying to get away from Tri-X, and Kodak chemicals completely. I've got one more bag of Dektol to mix up and use, and 5 more rolls of 120 and then I'm done.