Summary

Just flipped the original orientation and added instructions.

Generate supports
Only touching buildplate
Support overhang 60°

Print at 0.2mm, 0.18mm, 0.16mm, 0.14mm or 0.12mm.

Higher resolution (lower numbers) makes supports harder to remove.

Enable ironing and uncheck "iron only highest layer" if you don't like sanding your parts (still gonna require some sanding). It's a pretty small part, so bridge sagging won't be a problem if there's enough cooling.