ride intervals and train on your own for strength and then do some local group rides for charity for motivation and to feel good about it all. It's a combination that seems to have worked for me well when recovering from injuries. I do enjoy local charity rides or rides for a cause since they are generally so relaxed and eveybody is much friendlier and non competitive.

However you do it, as long as it feels good, is good for you. Ride on!

marni