That laser looks like it wouldn't have trouble fitting into the Peachy assembly, though I don't know the specs on the lasers the beta testers got, if all else fails, you could use a little bit of regular resin to print a new laser mount and snap it into place with the way the P28 is constructed.

Also the idea of a plant-based photoresin is intriguing (and the term "Bioresin" has an awesome sound to it.) I've only barely researched how photoresins work and I'm pretty sure I only understood a fraction of what I've found, so you have my respect for trying. Good luck!