Need help with saving file for printer

I am using Acrobat 9. I have a document with four pages. I need to save it in two files-- one file with p. 4 and 1 side by side to print on 11 x 17 paper, and the other file with p. 2 and 3 the same. The person printing does not have Acrobat so the pdf itself has to be formatted this way so they can print it. I can rearrange the pages, delete pages, and so forth, but I cannot get them to display side by side except in a "view" option.

Thanks for any help.