I would LOVE LOVE LOVE to work on this for you. I am a PowerPoint specialist - both back end and front end (the back-end is of no value to you). My Shows gain much praise and there are testimonials for you to look at in the Review section of my Profile. While these are largely for 'pure' business presentations they do speak to my level of expertise.
Beautiful transitions, and layouts will be applied to each slide; but mindful of what the constraints are. I would recommend staying with PowerPoint - as most users can make a tweak at last minute if necessary. (unlike Prezi for instance).
Where are the photos? Will they be supplied (already in order? or by contestant) via Dropbox?
Please have a look at my Portfolio - a sampling of work is there in addition to a bio. But that hardly matters for this job. This is about creativity! Note my 100% completion rate (I always finish jobs, never been cancelled midstream by the client after a draft being submitted) Stars, Badges, Tests ....
If you like, I could do a sample for you with your pictures to show you what can be offered. I looked at the attachment - are we bound to use the white background and footers? Should the photos be framed, background colors applied? Please let me know what your hard deadline is ... I entered 10 days as a placeholder.
I hope to hear from you.
Cheers, (did I mention LOVE LOVE LOVE to work on this - let's my uber creative side free ) Wendy