Sounds like a good plan.Since this is a deep WR draft class there's a good chance Duvernay will be there at 90. Considering all of the needs on defense would you be willing to spend 90 on him? To solve the Slot WR/KR/PR issues I think I would pick him despite needing to use resources on the defense.
In a way I hope they draft a CB in the 2nd and use FA to fill the Edge/DT/CB needs in FA.
If they were able to sign Suh/Jones in FA would you be OK with using the Rd 3-4 picks to finish out the offense. (WR/RB/OG)