FYI, 0.7 module is exactly 25.4 * 1 / 0.7 = 36.2857 pitch. The 32 = 36.2857 thing has been used successfully, but it really isn't optimal, and will likely yield unpredictable wear on the large (softer) gear. Instead, I would try to predict an appropriate size of 0.7 module gear, and order it before the season starts. Once the kit of parts arrives, make any design decisions that need to be made, bearing in mind that you already have a proper gear, and won't have to wait 5 weeks for it. Only if you can't use what you preordered, should you consider using some sort of crude alternative. (And if your design can tolerate plastic 0.7 module gears, they can be had within a week from
SDP/SI--even more reason not to go with 32 pitch, even when pressed for time.)