Salomon Taka Size

Hey all, looking to get my first splitboard for a trip in japan,

I've been using a 154cm board for around 10 years and been stuck on between two sizes for the taka.

158 or a 161.

I'm 5'10 and 185-190 without gear

Both of these boards will be a lot longer and I'm curious if the 161 will be too much of a gap