which ride are you looking at? You will likely need the 164 MINIMUM but probably the 167. You may also want to look into some burton boots as they are one of the best in the idustry for footprint reduction. That being said, theere are many good boot companies that make boots with very good footprint reduction that will reduce the toe drag and not force you into a wide board.
If you are uncomfortable in a 164/167... the 159W would probably be a bit more ideal for your makeup...