Jacking Rockwood 5th wheel (torflex torsion axles).

[Scoob]

I need to replace the tires on my 5th wheel. Pulling down to our favorite state park and notice 2 tires where 10 psi higher and warmer then the other two. So when we pulled into the park I checked the tires and sure enough two of them are pulling apart. Thank goodness for the tst this could have been a lot worse.
So now I am wanting to replace al 4 tires by pulling them off and carrying them 20 miles into town before I take the camper back home.

From what I can gather through searches I should put a bottle jack between the wheels and jack there to pull the tires off. If I want to do all 4 tires at once where could I lower it down to a jack stand to do the other side.

Was thing a jackstand on each end where the arrow is. Would that hold it without hurting the frame or should I just bit the bullet and only do 2 tires at a time?

Thanks folks for any ideas.
Scoob