Yeah the reason I posted this hand was because I felt sure it was a good spot to cold 4-bet bluff, but the just moved up nerves got the better of me and I jammed the fold button like a pussy. It did feel +EV for both describable and undescribable reasons.

I think I'm over the jitters of moving up now and wont pussy out on my instinct again - something I never did at 25NL. I'll defo take the point about blockers, if I get another spot to do something similar.