I am putting together a group of 10-18 senior Americans who want to leave Florence tentatively April 20, 2016 stop in Pisa for a few hours and then go to an agriturismo or villa (haven't selected one yet until get transportation) in Tuscany for 4 days. In Tuscany we want a vehicle and driver to take us to many towns such as Siena, Volterra, Chianti, Montepulciano and more. Who can you do this and at what cost. I see plenty of choices if our group was 8 people or less but not for a larger vehicle so any help would be appreciated.