Best Export File Format for re-editing in Premiere Elements

My Project Details:

I'm working on digitizing my family's 8mm film collection.  I have scanned the orignal films with a Retro-8 frame by frame Scanner which created 1280x720p.mov video files.  When working on these files in Premiere Elements 18 (2020) the Project settings are 1280x720, 24fps timecode.  I've done extensive video editing including adding narration.  It's now necessary for me to export the project (to create a new video file which includes all my edits and narration), then I need to import the newly created video file back in to Premiere Elements so I can do addition editing using the NeatVideo plugin.

My Question:

What is the best file format and settings to export my project to in order to maximize video quality so when I re-import the video file into Premiere Elements the video quality will be as good as the quality of the original project?  I'm not concerned about file size.

Thanks!