Depending on the board and boot, you may not need a wide board. For primarily park riding, 159 is the absolute biggest I'd go for your weight. 155-157 would probably be a better fit to be honest.
Nothing wrong with the Park Pickle. Darn good board. When you say park, are you talking more jumps or more jibs? I'm not much of a park rider, so others will be along soon with better suggestions, but telling them whether you're looking for jumps, jibs, or both will help with their suggestions.