I enjoyed a tour thru Brittany and Normandy with Road Scholar in 2017. It starts in Quimper, visits small villages, then the Alignment at Carnac, then works thru Saint-Malo and the Normandy area.
https://www.roadscholar.org/find-an-adventure/14250/brittany-and-normandy-distinctive-beauty-proud-ways-of-life
I did a Trip Report on that tour as well.
https://community.ricksteves.com/travel-forum/trip-reports/trip-report-paris-brittany-and-normandy-april-26-may-20
I find the Road Scholar tours fairly comparable to Rick's tours. Same emphasis on education and groups of 24-26 or so. Road Scholar provides more meals which can get tiring but you can always go off on your own.
The Fall after I did the Brittany tour in the Spring I did the Road Scholar tour of Cornwall and enjoyed seeing the smaller towns in this Celtic area as well.
editing to add: I do my own airfare from Lewiston ID. If you are flying from Pasco (assuming Pasco WA?) you probably know the air schedules and possibilities better than someone in a Road Scholar contracted travel agency on the East Coast. I flew in to Paris, stayed a few days and took the train to Quimper. Very easy.