Redwood or Jayco - are both viable options for my truck?

To the OP, you have certainly picked out 2 very nice coaches. Now you just need to finish the team and go get the right mule to pull it. A short bed SRW isn't it, sorry. You will be disappointed, in my opinion.
A stable platform has a lot to do with towing heavy comfort, a dually shines in that regard. Like Shakira said, these hips don't lie :).