King Louis

[Nick709]

The game is King Louis, a form of five card draw in which kings are wild as well as the lowest card in each players hand is wild.
So my question is if you hold a duece is it best to keep it? For example you hold 2579K, should you draw 3 to the K2 because you have a better chance of hitting another 2? or draw 4 to your K hoping to net more wild cards that way? If anyone knows the math that would be great too.