NL100 3BP std?

Poker Stars, $0.50/$1 No Limit Hold'em Cash, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

UTG: $109.55 (109.6 bb)
MP: $65.99 (66 bb)
CO: $148.61 (148.6 bb)
Hero (BTN): $151.53 (151.5 bb)
SB: $103.18 (103.2 bb)
BB: $220.42 (220.4 bb) 24/20/5 3b BU/blinds 7.5%,cbets in 3BP OOP 65%, 53%

Preflop: Hero is BTN with 4 A
3 folds, Hero raises to $2, SB folds, BB raises to $8, Hero calls $6

Flop: ($16.50) 2 5 K (2 players)
BB bets $11, Hero calls $11

Turn: ($38.50) 9 (2 players)
BB checks, Hero checks

River: ($38.50) 7 (2 players)
BB checks, Hero checks

STD all the way? I could use this hand as a bluff because it has some kind of equity compared to other hands in my range, but i decided to check it down.

Your thoughts?