200NL How to react to being 3bet light?

[Mike MacIntosh]

Reads: Villain is 30/20/1.7 over 50 hands. I have been VERY active over the last couple of orbits, to the point where it is fairly obvious that I am raising a wide range of hands from late position (stats were something like 38/34/inf over 50). I have picked up multiple small pots, and no one has played back at me yet.

For the sake of arguement lets say, villain is 3-betting us very light in this spot, and we are not folding.

Questions:

Given we are in position, is calling better than 4betting?

If you are calling, what is you plan for the flop?

If you choose to 4-bet, how much and what is your plan if villain 5-bets?

PokerStars No-Limit Hold'em, $2 BB (6 handed) Hand History converter Courtesy of PokerZion.com

saw flop|<font color="#C00000">saw showdown</font>

Button ($192)
SB ($141.05)
<font color="#C00000">BB ($284.25)</font>
UTG ($212.15)
MP ($273.65)
<font color="#C00000">Hero ($204.75)</font>

Preflop: Hero is CO with 6[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $8</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">BB raises to $28</font>, Hero ???