Those five names you mentioned are good posters in this great community, I don't know if they will accept this offer you brought, because there are some of them who don't like wearing the signature campaign while there are some who are wearing signature campaign right now. I think, you can hire them without a campaign, because they have the knowledge of impartation which it will bring more exposure to your organization but let the payment be what will put smile on their faces. But, if you decide to run a campaign, I will advise you to hire potential managers like AB de Rose, Hhampuz, cryptopreneurBrainboss and icopress and they will deliver the job we.