Hi Josh,
Keeping in mind I don't know anything about wood counters and kitchen islands, I would make this observation about your title:
<title>walnut kitchen island with undermount sink and tung-oil wood seal(65)er | J. Aaron</title>
1. Too long. You've only got about 65 spaces for a title, then Google clips off the rest. I limit titles to 60 spaces or less.
2. You've got what appears to be 2 related keywords (which you could probably rank for on one page) and a 3rd unrelated keyword in "tung oil wood seal."
3. "Walnut Kitchen Island" looks like a good long tail keyword to me (kitchen island would be short while adding the walnut is a longer tail qualifier).
4. The longer the tail, the more you qualify the buyer.
5. I tighter title would be: "Walnut Kitchen Island with Undermount Sink by J. Aaron"
6. Depending on your site structure you might have a page with a variety of Walnut Kitchen Islands on it with a link to a separate page with an undermount sink (which is what this revised title would suggest).
6. "Tongue Oil Wood Seal" seems like it should be on a page about how to protect and maintain your countertops.
7. Putting your store's name or your name on the page title is fine and standard practice when brand building. Some put it on the back as you do, some on the front and some not at all. If there is room, I put our store's name on the title, if not I leave it off.
8. If you're optimizing for local business, its fine to put your city, state or combination in the title.
9. I've got our store name and street address in the footer so it shows on every page. For pages I really want to kick butt locally on, I put the city, state in the title, otherwise I leave it off and let the footer do the work.