Being made to sight-read in Ab minor was a bit of a pig, but my teacher said I did not too badly (evidently all his students get this joy at some stage!!) It did make the following new piece in Eb minor seem somewhat easier.
For preference I'd currently take flats over sharps, but probably only three of them for choice

Hmm, perhaps some time for extreme key learning - probably useful as these are always the scales I find hardest, minor extremes (thinking of G# minor as Ab minor doesn't help me!!) Then those moderate ones with only 4 or 5 will seem much easier, I'm sure.
Mind you, I'm struggling with a D major piece at the moment, so unused to sharps, and suddenly you've got to remember C# every time...and as for that bloomin' top F#, makes me fall over (treble recorderists generally knee stop this note, i.e. cover end of recorder with leg, leading to wobbly balancing act).
Perhaps I should share this, which has been doing the rounds on FB: