Rowan Newshapes

I fell in :heart: with this knitted pea coat made out of Rowan Big Wool that I saw in a knitting magazine ad. It’s from this book Rowan Newshapes. I can’t find it at a library near me. I’m a beginner knitter (made a couple of basic sweaters, bags, and a LOT of scarves).
Before I buy it, are Rowan patterns going to be to difficult for me?