Need help deciding on job change

I have been an RN for 2 1/2 years on an orthopedic/trauma unit. It is very stressful and overwhelming at times. Our patient load is 4-5 per nurse. I work nights because days is way too hectic and I don't understant how anyone can do it. Even on nights, it can be so busy that we only get a 10 minute break during a 13 hour shift. I am applying for several different jobs at the moment and my goal is to find something with 8 hour shifts and that wil be less busy and hopefully far less stressful. There is an outpatient orthopedic surgical clinic that is hiring for a perioperative RN. I thought this was perfect until I read that it included the scrub/assist position. I'm not so sure about that. I don't know what exactly a scrub nurse does, but it seems like it could be very stressful. Any advice would be appreciated.

-Thanks