Response to Mattress question.
When I bought my Zinus RV queen, 8 inch mattress, Amazon had them in stock for $164.99 last January. I just looked, and they said it was out of stock, but available from others for more. Mattress comfort is so personal, as you know. Mine didn’t off gas much and rose to a full 8 inch loft in a relatively short time. I am very satisfied. Others had different experiences.