Actually GVs everywhere except BWV are plentiful in September at 7 months out; in fact most everything is easy to get in Sep. at 7 months and that includes time around Labor day.
Personal view is that the Jambo GVs are the best on site with its single story arrangement, large porches, added pool table and general spaciousness. Kidani GVs are also very good and possibly the best designed two story but nothing beats Jambo.
The biggest September issue you always face, other than heat and possible storms, is the usual lovebug invasion usually in full bloom about mid to late September. Harmless but some years there seems to be billions everyhwere while others it is not that bad.