I know you aren't entering the contest because we all know you are going to win the first prize so I remember Patchou saying (I am not sure though) that you are going to be a judge.
About the release of Phunk'n. Even if you finish it before the contest, it would be the best to release it when the contest ends. But I think that you could complete all 3 skins and release them together as you had planned as big things need time. Like Plus! 4.50 which took 6 months to be complete but was the best Plus! release ever, these 3 skins would certainly make an impact if they were released together introducing new features and other great things we expect from you. But the decision is yours.