The mirror is an accessory....choose the more important items, the bed, the nightstands, dresser, lamps first...then you will be able to make a more informed decision about the mirror.

I already have the furniture picked out and they have straight lines. Not sure about the lamps yet but perhaps that could where the curves come in?

IMO the mirror choice is best left until all the space is filled with the new furniture and bedding and lamps all of those things decide style and in your case mirror style BTW what is the purpose of the mirror there where you have that one leaning.