Hmmmm....
I guess this is ok as an exploit as pool could be quite unbalanced with their checks, esp if they are opening whide in SB.
But i still expect a decent amount of hands that are able to XC even an overbet: T9 with a club/TT/QQ/Jx or maybe KT...
So our hand plays pretty poorly (blockerwise) if we face a XC here.
What was your plan for the river?

Well our hand is crap but I like the spirit!

In all seriousness this probably just works despite not being optimal in all likelihood.

"Pre is a standard defend."

I think standard is a dangerous word in poker. This is one of the more reasonable 3betting hands and probably overperforms compared to equilibrium:

I'd personally target his auto folds OTT with a 60% pot size, 22-88, Ax, Qx, weak 9x, Jx, etc (tons of hands), and go for the big bets on rivers to target weaker Kx, PP with a missed FD etc. That being said, this is one of those spots people play so badly until at least 500NL that you can get away with almost anything. If I were to go big with some hands, I'd pick a hand with a little more equity when called.

Something to be aware of is if you have the mindset of having to do something special when bluffing. I see some players at lower stakes try to do something special instead of just making the bet look like you hold your average good hand that bets. It's quite easy for an aware competent poker player to figure out your patterns if you try to accomplish special things with your sizes. You can do this against weaker players but as you start playing against better guys (think 200NL+ players that don't just autopilot and say standard call/fold) you might run into people being able to figure out what you are doing and then the play goes from maybe making a bit extra vs unaware guys to massively underperforming.