We could get to #8 in trades with Chicago:
Bears get:
Bills #12 - 1,200 points
Bills # 56 - 340 points (24th Pick in 2nd Round)
Bills # 65 - 265 points (1st Pick in 3rd Round)
Bills # 96 - 116 points
Total 1,921 points
Bills get:
Bears #8 - 1,400 points
Bears # 39 - 510 points
Total 1,910 points
We'd have seven picks: #8, 22, 39, 53, 121, 166, and 187
And then from #8, Bean could trade up to #4 for a 2019 2nd or 3rd rounder or to #2 for 2019's First rounder.