Technically any amount can be pledged, but yes it’s simple enough to add another suggested amount. I’ll do that.
I’d be open to taking requests from patrons for texts they’d like translated sooner than later. That would be more than fair, given that their support is making the project possible. I’m not sure if I want to book individual sutras through direct sponsorships, but I could add making translation requests to the tier benefits at Patreon.