Imo the only two viable options to isolate a presumable weaker player (with 100bb stacks) are to dominate a wide stack off range, or to take advantage of a fit-or-fold mentality. Clearly your hand doesn't fit the first requirement. Given your read on villain so far it seems fair to try and isolate him and then to take down the pot post-flop with a c-bet very often (until he starts fighting back). The board is so light and dry, plus you have some sort of blockers to continuing hands. For these reasons I think you would've been much better off to just pot it pre-flop, and then follow through with a c-bet on this excellent board.

(Imo the only times to consider 3-betting smaller than pot is against a villain who is opening way too wide, but who fights back one way are the other post-flop. That way - instead of just 3-betting hands that are capable of dominating his post-flop stack-off range (at SPR 3-5) - you get to exploit his looseness even further by 3-betting some of the weaker multi-component hands too, because you preserved post-flop maneuverability.)