Gronk + Marvin Jones for kelce or ertz?

As a gronk owner I’m over it. I’ve got njoku. But both have same bye week. Worth it to go after a kelce or ertz? I sent the offer gronk with John brown but I don’t think that gets it done, should I ship gronk plus Marvin Jones? I think that gets the deal done. Both teams need wr. Marvin Jones finished decent against a tough defense and still has the hype. Ertz is past his bye, kelce still has one coming. All other positions are locked up rest of season. Marvin Jones position is for my flex. Remaining I would have John brown, marlon Mack, ito smith, Austin ekeler and whoever on waivers.