What size are your quilts? What machine are you using? Hoop size?
The best advice I can offer is to learn the machine features first working on small projects. Learn how to position the design where you want it. Learn how to re-hoop and position the next design. Learn hooping techniques so the hoop doesn't pop off. Learn what to do if that does happen because it probably will at some point.
You want to be able to get back where you were in the design. Get comfortable with your machine first and then work with your quilts. It's not a quick and easy process. Take classes if your LQS offers them.
I have used a magnetic hoop to quilt ITH. I tried a regular hoop and just couldn't get it to work. My current quilting project is 68x74. I am managing it okay but it is a challenge.
Good luck!