Before I had a spring joint capable jointer we would make one cut starting a few inches back from board end and stopping a a few inches from the trailing end. Followed by a conventional pass over the entire board. This produces a fairly decent spring without readjusting the jointer.
I do all my edge gluing either in the JLT clamp rack or with bar clamps. I never felt the K body type clamps were enough unless a lot were used. I glue a lot of 8/4. With strong clamps less are needed. It’s magical how you can tighten the center clamp and watch the squeeze out run all the way to the ends.