Rome Airport: UberBlack or Blacklane?

We are traveling to Rome in less than two weeks. There are 6 of us with carry-on luggage. Does UberBlack offer large vehicles to transport all of us or would I be better off booking a 6 passenger van with Blacklane or another private driver company? We are traveling with our teen kids and prefer to be in one vehicle. Or would it be more cost effective to get two UberBlack vehicles? It’s roughly a 30 minute drive from the airport to our Airbnb.