Oooh, very nice pattern. I'm tempted myself.
As for the advanced aspects, so many intermediate sewers just wouldn't tackle a coat on principle that it sounds like tailoring even though it uses techniques in which they may be more than competent. The combination of side pleats, double breasted design, lining and just being a coat puts it in the advanced sewer's category for many people but individually you wouldn't worry about it so no need to do now either. I've only ever made one coat myself now I think about it although that was reversible and got used for more than a decade (Burda magazine pattern in the 80s). I do have two coat patterns in my stash though, waiting until I've shed the last stone.
I'm very much looking forward to hear how it goes together as well as seeing the finished result.