I have no experience traveling with a tour group but some members here have.
One couple said that they have done so several times and that some tour groups were better than others. It depends on individuals within the group and how your plans fits into the group plans. Someone else said that the last tour group they did would be the last because things didn't work out as hoped.
You could try a short trip to test the waters before committing to a long trip.
Great choice for "Living within my means" and camping for one...
2011 Salem Cruise Lite 20RBXL & 2011 Toyota Tundra Dbl Cab
Camping History: 45 Trips / 133 Nights / 3736 Miles
FRF Social Group: Campers of the West