Hey! I think that's great experience!
I have two years of ICU experience (Level 1 Surg/Trauma ICU and then CV/Neuro ICU) and then 2.5 years of Endoscopy experience after that. I have been Charge in Endo but that's about it. I think what helped my application was the fact that I took 3 Master's courses before applying. There is also a personal statement that you need to submit and I felt I wrote a strong statement. Hard to say honestly what the deciding factor is because I had the same fears as you.
Oh yes, once I joined Endo, I joined the UBC (as Co-Chair), Staff Nurse Council, and Best Care Committee, where CNO,CEO, Surgery Director, Infection control, all the heads, meet together and discuss quarterly issues. I was given the opportunity to attend representing GI Lab and report our audits and trends. I do audits and submit reports for GI Lab to my supervisor monthly. I mentioned all this in my personal statement so I want to say it helped.
Once I started doing all that administrative stuff and attending that Best Practice meeting I decided that this is the route for me.
I would assume they would want to see what efforts you've made to show that you want to be a part of the big picture. Hope this helps