This sounds like an interesting idea. The retail store in itself will take up all of your time, at least in the beginning. If you have never owned a brick and mortar business before you will be surprised to see just how much time goes into the "behind the scenes" work. Dealing with vendors, suppliers, the IRS, landlord, employee issues, regulations that pop up constantly out of nowhere...will seem endless.

If you have your own home decor line that will be helpful, but again, dealing with a retail shop will cut down on a lot of your design time.

Be sure to write up a realistic business plan and research funding options.