New 11-7 shift supervisor position

I currently work in a 135 bed sub-acute rehab/nursing home. I've been a staff nurse here for 4 months. I've been a nurse for 4 years, although psych was my previous specialty. I'm doing really well on 7-3 - I'm innovative, do a ton of creative problem solving, streamline my work, keep everything stocked, and try my best to keep both med carts under control. I'm also very interested in doing QA and education. Today, I was asked by the DON if I would be interested in taking a M-F 11-7 shift supervisor. She said she'd include some QA and staff development duties. Right now, we don't have a nursing supervisor on nights, so I'd be filling a currently unmet need. My DON has said that she'd like me to work with the 3-11 shift supervisor for a week or so before starting on my own. Do you think this is enough time to get a good picture of job duties and expectations?

I'm going to be meeting with the Administrator and the DON on Thursday to discuss the position and negotiate the salary. I am really excited about the idea of never working weekends. I'm married with no kids and DH will actually be starting an evening position soon so we should be able to make things work to see each other during the daylight. I'm aware that I'll probably have to pick up a cart if there is a call-out, do assessments before sending someone out, and helping with admissions. Are there any red flags I should look for when meeting with administration?