100nl pot controll atempt w/KK

I tried to go to showdown cheaply here but felt stupid for calling river. What do you expect to be shown a lot here?
villain is a 46/10 over 20 or so hands so no reads.
$0.5/$1 No Limit Holdem
5 players
Converted at weaktight.com

Stacks:
UTG 4check ($99.25)
CO SHUALX ($59.00)
BTN goatsheepmath ($33.00)
SB desmondhume ($85.00)
BB Hero ($319.63)

Pre-flop: ($1.50, 5 players) Hero is BB :kc: :ks:
4check calls $1, 3 folds, Hero raises to $3.50, 4check calls $2.50

Flop: :7c: :9d: :td: ($7.50, 2 players)
Hero bets $6, 4check calls $6

Turn: :7s: ($19.50, 2 players)
Hero bets $16, 4check raises to $32, Hero calls $16

River: :js: ($83.50, 2 players)
Hero checks, 4check bets $39, Hero calls $39

Bigger raise pre-flop makes life so much easier.