OTT - not quite sure. Maybe betting is better, both for value and protection. + I have double gutter, so i can start building a pot in case i hit OTR.
OTR - When i checked twice, JJ is very high in my range here. However, facing pot size bet or overbet OTR usually is a nuts, especially from recreational players. Still, i think JJ is a call here. Villain shouldn't have any 7x and probably bet the majority of his FD's OTT.