So how I see it you have to look at the crop of FA's. Most of the talent is Oline and Dline.
Our most glaring need is OL. I hope we could get two starters in FA on OL and potentially an elite pass rusher, who won't be cheap, but would fill a legit need. I know we need WR but there isn't a WR1 there so why overpay, draft is deep a the position and hope we take two in the draft. I don't see interior DL as much of a need as some, we have Harry and hopefully re-sign Jordan Phillips and I think that is pretty good; then if Kyle wants to come back bring him in, I saw him and Lorenzo were 8M combined against the cap. Lorenzo is more a need to bring back IMO.
Then you let the draft come to you and draft BPA; needs during draft would be WR, OL, CB, OLB, RB; and maybe we take CB in the top ten if thats BPA(wouldn't be my favorite, but BPA is)