HI:
Welcome back.
I agree with you on all of your recommendations with the exception of Chuck Knox. He was 37-36 as head coach of the Bills (if my math is correct). He had two winning seasons 80 (11 - 5) and 81(10-6). Knox was 1-3 in playoff games. The Bills actually had just two losing seasons prior to Knox being hired.
Though he was a big name hire, his time in buffalo was moderately successful. Not wall of fame material in my opinion.