We bought a used 2011 Winnebago Journey Express 34Y. Love the floorplan, and we take it to all kinds of Fed, State, and even County parks routinely. The model name implies 34', but it measures 34'11" - still no problem getting in and out of places we want to go. When we were looking, we had a 30' limit on length for the very same reasons you state, but slowly creeped up to get to the ideal living area for us. You really won't notice any difference between 32' and 35'. Agree that for long treks from Alaska, the diesel option is probably more appropriate as these chassis and drivetrains are made for high miles. Also agree that up front cost and maintenance are higher for diesel, but as soon as we took some test drives in diesel pushers, it was game over for gas. In summary, we are very happy with our decision, good luck with yours!
John & Kathy, and Pixie
Maggie May - 2011 Winnebago Journey 34Y
MoJo - 2020 Jeep Rubicon Toad