Replying to K2 Reckoner 102 correct size

Ciao everyone,

I'm planning to get a pair of K2 Reckoner 102 since they're highly discounted here in Italy and I'm just reading cool reviews about them.
I've only got one doubt.

I'd like to get more into park skiing (now my level is just basic) and I'm getting these all-mountain skis so I don't have to switch skis going from powder to park/groomer/mixed terrain.

I'm 183 cm tall (6') and if I had to get these skis just for pow skiing then I'd have gone straight to the 184cm size, but since I'd like to get more into park skiing then I was thinking that maybe they're too long and then 177cm would be the right choice.

Any advice?

There's also to consider that a 184cm long rocker ski would fell slightly shorter than a non rocker one I think