A Kick Up The Sew-Jo?

Somebody talk me down…

 This is the Arte coat pattern from Oki Style on Etsy.

Wouldn’t it look amazing in this green wool check?

Has anyone used an Oki Style pattern?
Is this a very bad case of cold-weather-induced madness?

Or could this be exactly the challenge I need to get myself sewing again?

EDITED TO ADD:  I have since discovered that you can view the sewing instructions for Oki Style patterns before buying:  how clever!  So I now know that this pattern is (possibly) less scary than it looks, and requires 2.8m of fabric to make my size.
This facility is available on the main Oki Style website, where prices are in Euros and appear cheaper than on Etsy.