Look if they can really get #1 and #3 done for Williams and Harrison, while only giving up #9, Fields, and a lower pick or two, you HAVE to do it. If you are drafting a top QB you have to give him tools and protection. Giving him a generational wideout is huge. I would really not be surprised if Harrison is the obvious best pick from this draft 10 years down the road, and not any of the QBs. Yeah, we also need O linemen, but we have the rest of this draft, as well as a fuckton of cap space, which can be used in free agency and after teams start cutting people.
If you can't pull off the deal for Harrison, it will be interesting to see what happens to the O linemen to see if they run off the board before #9, or if the Bears can pull one of them, or if they look at the other WRs as this is a big time class for wideouts.