Rezoning from SFR to PO or C Advice

we have a great deal under contract that is a SFR on 1acre with 100ft of frontage on a major road. It's completely surrounded by commercial now and similar lots and sizes around it that were once residential are now all commercial. There is a tear down house on the property. We got a rezoning contingency on the purchase contract and 5 months to make it happen. Time to start the work. Are there services out their I can high to handle rezoning for me? We are going for professional office. I know they will cost some money, but unsure about costs. Our experience is in residential and I was waiting for the right project to jump in commercial. We are in this one with great margin so here we go. This is in Apopka FL. I know there are many steps that need to be taken but I'm more interested in hiring or partnering with experienced professionals then learning the dit approach on such a deal. Just need to know who I need to hire