Hi blessingsdf4. Welcome to the forums!
I can understand your concern. Windows that hinge from the top open widely and allow the best air circulation. These have always been my choice. Some Airstreams have Hehr windows where the openable section is a sliding section just in the lower third of the window -- that won't allow the best air exchanges.
No power? Will most of your camping be boondocking? What experiences would point to this being a dominating issue for you? There's such a big difference between an Airstream trailer vs. a moho. Please be cautious and take your time if this is just armchair what-iffing at this point.
Hope we get lots more input. AIR Forumites? ? ?