Very useful infos, especially these for the boots and the bindings! All these years I wear Burton Mission and Burton Ruler! For my new board I choose Burton Cartel (something better than before), hope this is a good thought for me!
For the park you mention, I don't know if a "park board" is perfect for me because in my country the word SnowPark is unknown
To definite my style, think a more freestyle riding on piste and everything next to (small jumps ...enough for a simple 180,butters etc) BUT forget anything about tube or big jumps and landings!
Plus that the lenght of my previous board (161), seems to be too much for me! As for the Joystick,yes, is an option for me, but , can I really fit in a 158 waist width?