Thank you. Section A and B with Swing Two/Four is really a great idea. So, I tried it. It works for the first time but the second A section didn't come back with Swing Two feel but still Four. I don't know why.
Yes, I intended r-i-t as ritardando. I wanted to spread the mark to cover bigger part of the bar (but no effect on the player anyway).
Oh, and I didn't know "4x" text takes effect at the beginning of a repeat section -- I thought it should be at the end but it works as well.