I am rather short too and I''ve got a classical (student! )guitar with a 630 mm scale, specially built for me. The builder also made the distance between the strings a bit smaller and he made the fretboard a bit 'curved', sort of like the fingerboard of a cello, but much more flat. This feels very comfortable.
He told me a 630 mm scale was the smallest scale that permitted to have a normal size corpus. I love having a normal size corpus on my guitar, as a smaller corpus usually means a smaller tone. I don't have any problem with playing a normal size corpus classical guitar.
As my fingers still won't stretch much, I play with a capo on the third fret. That way my guitar sounds nicest and it is a bit more comfortable to make large stretches.
I once got a tip that one could tune the guitar a minor third down and then put the capo on the third fret when one wants to play with others who don't like to use a capo.