As for fast-finishing Sativas, Flo, from Old World Genetics, comes to mind as a quick, Sativa-dominant plant. Dope Beard Durban, from AKBB, at 9 weeks, should be a pretty quick Sativa, too.
The breeder's description for Charlotte's Gift reports ratios of 20:1 up to 34:1 (CBD/THC).
:blsmoke: