Christian -- I go with Eric's #4 suggestion:
19:18:14 Calculated field of view (arcmin): H = 42.9 V = 28.6
The GSC should be entirely adequate. The USNO A2.0 has become old and stale due to no proper motions. I have updated the article on catalog choice and downloading to downgrade A2.0: Downloading and Using PinPoint Reference Catalogs (Updated Feb 2025)
Try switching to the GSC.