Hi Rochelle, cute shop. I'm actually in the process of seperating my line. This shop for my map jewelry and homewares and the new one
http://etsy.com/shop/sosherry for my other work.
I like an uncluttered shop. You can use lots of backlinks to tell people about your other store.
I'm sure you will get lots of different opinions, but in the time I've been here, I've seen lots of successful people seperate shops.
In the end, just do what works best for you.