Replying to Twin tip sizing question

Hi,

I'm a beginner skier and I'm a bit confused about the sizing for twin tip skis.
Basically, this was my first season and I did it with some cheap second-hand all-mountain skis but I'm looking to upgrade to a pair of twin tips for the next one.
I measure 5'9 (175 cm) at 145 pounds and I see a lot of options for which the sizing goes from around 168-172 to 178-182 as my height is around the middle I was wondering if I'm better on the shorter or on the larger side.

I'm more looking into an all-mountain twin-tip rather than a park ski as I have not done any park actually but I enjoy playing around small jumps, cliffs, and tree sections on the side of the runs plus I have started to try to ride switch as I want to learn 180's and on in the future.

Thanks for any advice!