Hi Lori,
Thanks for joining us here and we hope to be able to help with your question!
June is a great time to visit, our days are at their longest giving your group plenty of daylight hours to explore.
There are some 
chauffeur companies listed on our website that should be able to help with your private tour plans. 
Chauffeur Tours of Ireland, 
Ireland Chauffeur Travel Tours, 
All Ireland Chauffeur Tours, and 
Dublin Mini Coaches would be a great place to start your search for your perfect trip.
In addition, some of the larger tour companies such as 
Paddywagon Tours also offer private tours.
Your planned route of 
Dublin to 
Galway to 
Dingle to 
Killarney to 
Cobh and back to Dublin sounds like a lovely way to spend your time in the southernmost part of the Island of Ireland. 
Is there anything in particular that you are interested in seeing or doing during your time with us?