I don't really agree with any of your ideas. Why would BB need spend for a backup QB in FA and waste the cap space. Just draft one, keep Hoyer on the cheap, and you're good. Kyle Lauletta in Rd 2 would be great.
Agree on Harrison. I don't see where else he wants to go, assuming he enjoyed his time in NE. He could be better next year, technically, with one full offseason under his belt.
Resign Marquis Flowers.
Also, I think the drafting of Garcia last year was meant to be the Solder replacement. That guy needed to gain weight but he lost a bunch instead due to an illness. Maybe he can ramp up?
Word is, Denver will be in on him as he may want to be closer to his parents and in-laws.
Try to keep Dion Lewis, if not, walk and go draft or see if Giovani Bernard (assuming he might get cut) wants to come in with White.
Resign Waddle and/or Fleming. People make fun of these guys, but both played well overall.
I think they need DL, CB, LB, QB as needs picks. Maybe Tackle, yes, if Garcia is not ready. T