Flop: KKxx in PLO8 is worth a limp, but UTG in LO8 I usually fold it. Although limping isnt terrible.
Flop: Bet and then re-raise. You have a vunerable hand, and a decent chance to protect it. Although there are no straight or flush possiblities, you will regret it when another low card comes and takes 1/2 the pot from you.
Turn: Bet. Get the low draws out. Now is not the time to play like a donk that watches too match World Poker Tour.
River: Fine.