Sorry if this is written badly, it is late and I am about to go to bed.

Ok so I am going to this guy's halloween party next week. I need help with the dancing part. Let me give you some context:

It is a college party with plenty of single gdi's(people not affiliated with a frat or sorority). This allows me to be more aggressive with the girls because they won't tell their friends about me and give me a reputation that would be super hard to shake.
I went to a party at the same place a couple of weeks ago and had a blast. I ended up kissing this chick and got her number, felt around in her bra, etc. I also went into the dance floor and just asked this girl to dance. She just said, "ok" and it was great. The next girl I asked to dance didnt mind at all when I put my hands up her skirt and she was wearing a thong. It was weird b/c I had just asked her her name, and that was all I knew about her lol.

Anyway so my problem is what to do as / after I am dancing with them. If she is facing me, it would be really easy to get a makeout. But where do I go from there? Even if I don't kiss them there, should I try to pull them outside for a talk? How should I do that?

edit - also - do you have any ideas about what I should dress up as?

Really? Nobody has any ideas?