shorter guy, longer drapes

Hey fellas, With fall closing in and temperatures about to get cooler in eastern Canada, I was thinking of pieces to layer over my chunkier wool shirts without breaking the bank. At 5'6, sometimes longer pieces make me look like I'm wrapped in a blanket. Recently, I came across this le 31's open cardigan. It's made out of viscose fabric so it should be good in the 10-20C temp range, before I actually have to break out chunkier jackets/coats. Thoughts about buying one in green, like in the picture, to match with say, brown corduroy pants, a beige-ish wool shirt and black oxfords? Thinking of using it as a piece to casual down my outfits.