Powerpoint presentation templates

I am looking for someone to design a number of powerpoint presentation templates for me. I have about 50-60 slides that i'm working on right now and will need them finished by Saturday 21st for a presentation on 23rd. My thoughts are that it's probably best to just get a selection of 15/20 templates built so I can choose which one to use for each slide. I have all the assets for the various slides for you already so should hpefully be simple for someone who knows Powerpoint well.