I vote no.
Keep your love, your passion, your interest separate from your lively hood. As others have pointed out, it is a huge investment.
I live in a huge metropolitan area. There are 4 or 5 quilt shops I can go to at lunch. Some do the whole machine, fabric, class thing, some do long arm work at the back of the shop, some have lots of fabric and classes in the back. Except for Eddie's, none seem to be making a mint. More telling is the number of fine LQSs that have closed over the last 10 years. No one to sell out to. The books don't lie. Imagine putting your life into a project for ten years say, and in the end, selling everything for pennies on the dollar just to get rid of it because you can't take the red ink.
A lot of the issue is people who just won't pay for quality fabric.
Perhaps start an online store through EBAY and sell locally at craft fares. Get your name out but never over expand and never put your life savings into something like this.
Just my opinion. tim in san jose