How do I layout the back cover of horizontal folded 11x17 paper/brochure?

First time "designer"
I am creating a 11x17 horizontally folded photo brochure from one piece of paper.
SETUP - I've created a document 11" wide x 17" height, 2 pages, non-facing, portrait
PAGES - So I'm designing two "pages" (front and back side of paper). When you open up the brochure the inside pages (2 & 3) are easy to layout. The front page (1) is easy also as it is the bottom half of the first "page". The top half of that "page" is the back cover of the brochure, but it needs to be upside down compared to the front cover. Do I design it all right side up and then somehow flip it all just before printing? How is this done? I've tried rotating the objects but they seem to just rotate away off the page (as if they are rotating about the upper left corner of the frame instead of the center of the frame), flip off the page (as if they are flipping around the top of the frame instead of the center of the frame, or gives me an error message about objects off the pasteboard.