That's really rather nice - and proper rack and 'guard mounting eyes.
"You will need new dropout adjusting screws/springs (example here) but note that one is snapped in the dropout so would need to be removed first, or you could install dropout spacers which clamp within the dropout itself (example here). "
Not really. Easy enough to sit the wheel square and straight at any point in the drop outs (only what one does with fixed wheels in track ends!).