It's all on what you prefer. I'm 6'0 175lbs and I have a 158cm.
im 5'7 170 and i would use a 156 for closer to a free ride. all personal preference except i can guarentee you its a less then ideal park board in that size. i bought a 152 stairmaster extreme with intentions of using it as a park board but now i use it for everything. i find smaller more maneuverable boards more fun..
5 cm would be an extremely noticeable difference btw.
Lib Tech Skate banana
Burton [ak] 2l Cyclic Jacket
Holden Northfield 3L pants