Quality of photo needed for enclosed trailer

[BRUSHMARKS]

we are doing a enclosed trailer. print area is 6'H X 24'L. we found a photo we want to use, but are not sure on size we need to work on the trailer. we found it on shutterstock.com. i wil post the link to the picture. any advice is appreciated.http://www.shutterstock.com/pic-515...mpetition-september-in-constanta-romania.html

 

[Shovelhead]

Get the bigger one. Aren't they all the same price anyway?
And then run it through PhotoZoom.

 

[BRUSHMARKS]

Get the bigger one. Aren't they all the same price anyway?
And then run it through PhotoZoom.

ya they are i guess my question should have been is the biggest one big enough. what is photozoom?

 

[Shovelhead]

It's all subjective. It would be good enough for this application for me.
PhotoZoom "de-pixelizer" software.