I would focus more on MLCAPE over SBCAPE, however, given the presence of mlvl lapse rates approaching 7-7.5 C/KM atop of Td's in the mid-to-upper 60's and sfc temps ranging between upper 70's and lower 80's MLCAPE values 1500-2000 J/KG is not unreasonable. In fact, if mlvl lapse rates are more 7.5-8 C/KM those values would be quite likely.