Making a move/first kiss?

Here is the deal I'm 16. This girl and I went to grade school together. And now go to different high school. I have been texting her A LOT this last week and I saw her the last two weekends. We danced a little together this weekend. I am trying to make a move cause I like here. There wasn't anything really there in grade school but there it potential now. However I know that two other guys might be going after her so I know I have to make a move. I invited her to a party next weekend that my friend and I are throwing at a pond (my 6 pack I think will be looking good wich she might not know I have one HAHA) and after words there will be a bonfire with just lawnchairs and all of us chilling. There will be 15-20 people there total. I am wondering how to make a move I would love for us to end up sitting next to each other during the bond fire in the same chair but I don't know how I would bring thought on with out be awckward? And when that does happen if I was holding here should I give her a kiss or do you just play that by year? Please help I am pressed for time. Also we are bothing going to be juniors