This is a great idea, and I bet you could raise a lot more than 3000! Why not just put this on indiegogo or kickstarter or some other similar trusted platform instead of asking people to just paypal you money? I figure many people would feel much more comfortable that way, and you'd probably get a bunch of publicity from just being on the site.
I don't understand the point of the semi-secrecy. There's almost certainly hundreds of MS employees on this site which means you've lost that advantage already, and anyway you're going to have the same problem after you release the software.
Are there public code hosting (gitlab?) in other countries, where the dmca does not apply? maybe something in Europe, where reverse engineering might be less strict?
I don't understand the point of the semi-secrecy. There's almost certainly hundreds of MS employees on this site which means you've lost that advantage already, and anyway you're going to have the same problem after you release the software.