Premeditated bluff. A good one or just a reckless gambool?

[Tilt]

PLO 1-1. 5 handed.

I have been at the table 3 orbits with very little action so far. I have been quiet and passive, really no hands to play. Villain has been moderately aggressive postflop. Until this hand there had been no raises preflop.

My stack is about 95, Villains has me covered.

I am BB with 6D,5D,10H,JS. Villain raises to 3. I call.

Flop (pot = 7) 3C, QD, 7D

I check, villain bets 7, I raise to 21, villain calls.

Turn (pot = 49) Ks

I lead out for 49.

Thoughts? I was pretty sure he had aces, at least one suited. I called his preflop bet with the intent of representing trips if I hit any decent draws. Obviously after the flop call I was pretty unsure whether my diamond outs were good. But I figured I had at least 8 sparkling clean outs and possibly 9 more if my diamonds were good.

A good bluff or reckless, obvious bluff?