Thank you for all of the great replies. We purchased an RF-18 from Lowes, and they are going to hold delivery until we tell them where to deliver it. We are leaving for a Western trip on Monday. We couldn't get anyone to install it by Sunday, so we'll wait until we get back home in August. The one place we are negotiating with wants the old Norcold in partial trade for their labor, but they don't want to install the RF-18 until after Labor Day when their service department slows down.
Yes, we will lose the two drawers under the Norcold, but we aren't full-timers, so that space isn't crucial.