I'm going to be the dissenting opinion...as always, YMMV.

I find my Pearl winter jacket to be veeeeeery warm, and I've never layered anything heavier than a midweight jersey under it. I can't even wear it until it's below 40 degrees- it's that warm.

If it were me, I think I'd sell it now, when people are thinking about buying winter gear. You're likely to get more takers that way. Closeout sites like Bonktown and Sierra Trading Post are a good place to find deals on a replacement jacket.

Just my opinion- that and a dollar will get you a cup of coffee