Just throwing this out there...but have you looked into patreon at all? Could be a good way to help with funding in the future, and unless I'm mistaken it gives you a list of those who donate at the 5.00 and above level. Shoot those folks an email with a code for the finale, badda Bing bang...boom. Its really worked well for those who have jumped the tWIT ship recently, might be an option here.