Since no one else chimed in....

Don’t you have another thread currently about this same topic?

On to the point. I have the 2906s. Lots of us do. Good springs for load carrying. Maybe a little stiff empty but not horrible. Not 3 inches though. They are a 2 inch spring. Maybe more for you if you are super clapped out at the moment. Good fit for the 4600 or 5100 shocks.

I have a different front set up so can’t offer much there except that it’s commonly done.

My personal opinion is that you will not call the setup you have chosen “comfortable”. I think somewhere between truck like and jarring is where you will find it without adding lots of weight. But opinions vary widely.

Good luck.