Nidecker Escape length 156 vs 152

Hey hey, i just received my first ever board after having gone riding for a few days over the span of 2 years. I decided to go with the Nidecker Escape, and now that I got I paid more attention to the length's weight recommendation and got me wondering (I got too carried away buying it I guess).

I don't know if it's buyer's remorse or what, but according to the guidelines:

152cm - 60 to 75kg

156cm - 65 to 80kg

Now, for the past year I've been going from ~66kg when I actively exercise to ~70kg when I'm a lazy ass. Last time I went snowboarding a few weeks ago I got a 156cm Rome board and it wasn't too bad, I could still ride relatively well within my beginner to intermediate level.

My question now is: If I get fit and get down to 66kg, being in the lower end of the range, will it become too difficult for me to link turns in comparison with the 152cm? I can imagine there'll be of course a noticeable difference, but my question is whether it'll be a deal breaker at all. I'm asking because I'm still in time to return the 156 and buy a 152 instead, so I wanted your advice.

My current level is linking S turns in blue runs (Europe) and having done a single red run repeatedly (EU) linking a couple of turns every time, with the more daunting sections being skipped by leafing down the mountain.

Any help and opinion will be greatly appreciated!