Ideal Snowboard Length for 6'3, 187lb, 11.5in Boot Size? 157W vs 160W

Hey all,

I'm a beginner snowboarder (1 season in) and am looking to get a board for myself with all the discounts going on right now.

I'm trying to find the ideal board size for myself but getting a ton of conflicting answers online.

I'm currently eyeing the Arbor Formula Decon and am debating on either 157W or 160MW, but genuinely don't know which would be a better fit for myself.

I'm still mostly learning and would appreciate something more forgiving - but I also want a board that can stay with me for a bit without having to upgrade. I would appreciate any opinions.