2nd bar of the B section:
1st beat: E-7 (there's a minor 7th in that chord)
2nd beat: it actually sounds like a GM7/D because the strings are holding the G note on top of those four chords, but the rhythm section is actually playing a B-/D. So you can write it either way. But there is definitely no "E" note in that chord.
3rd beat: you can write it as a E-/C, but it's just like a CM7
4th beat: same thing as with the 2nd beat here. There's no "E" note in that chord. It's just a B-7.

1st bar of C section: both chords are minor 7th.

Tempo of the song is 85 or 86, definitely not 90

D9sus chords are the same as A-7/D
Either ways are fine, but with IRP (in general), it's better to use slash chords only when really necessary because of vertical spacing consideration (to avoid overlapping between lines)