Here's the problem with a 7x14 foot island. Along each 7 foot side, you're going to have about 8 feet in the middle you will not be able to reach, and along the 14 foot sides, you'll have about 1 foot in the middle that's out of reach. So, if you can live with just scenery in that 8 square foot area in the middle, your island should work just fine.
Chuck