I'm not sure I would go through all the hassle of making a second blog. I think I would actually make my main blog more personal, and actually include posts about my life, and then of course the food and your shop and whatever else. "Shop" blogs are fine, but I think the blogs that have a more personal touch just feel better and do better.
Sorry if this doesn't make sense...I'm extremely tired. Hopefully you know what I mean! :)