Editing with Iphone video...halp!

So I've been asked if I would do a favour..

A friend of mine is getting married. The wedding videographer (And I use that term loosely) has captured some 'wedding messages' on his iphone to which I have been asked to edit for displaying on a projector on the big night. I know what you're thinking... IPHONE quality vs. the scale of a projector- NO WAY. I'm not sure exactly where to begin with this one.

What is the best way to approach this in terms of work flow and making this look semi-decent on a bigger screen? Am I just kidding myself??

They files are mov. and need rendering when played the timeline. I was thinking of just converting them all to apple pro res to make it easier. Good idea/bad idea?

Any help would be so very appreciated.

Actually the quality of iPhone video is pretty nice. Full HD. I've shown it on projectors before, it looked nice. Yes, convert to ProRes.

Thanks BenB. Should I use the batch export tool to do so? Which ProRes would you recommend?

ProRes 422, and create a Droplet in Compressor to make the process easier.