You know, I don't recommend a Form 3 except in unusual circumstances. It's labor intensive, messy, and
expensive. The resin itself is expensive, but then you also have to buy expensive new resin trays frequently because they wear out fast. I used it a lot when I was finalizing the 3D models to get them ready to send off to get injection molds started. The precision of a resin printer was critical. If I were you, I'd use a service like i.materialise.com instead. The prices are low for resin prints and they're pretty fast to ship, too.
That's a great idea with the anonymous donation. If anyone is looking for a great place to donate, one really cool program is the Turing Trust. It's run by Alan Turing's great nephew, James Turing. He's awesome and he does amazing work. Here's their website: https://turingtrust.co.uk/