You might also want to think about "recovery rides" after a hard ride. Just take the bike out and spin easy to get your legs moving, but not working hard. DH swears his muscles recover so much faster after running a marathon, riding a century or anything really strenous, when he does a recovery run or ride later that same day and/or the next.
Sounds like we're at a similar level. I ride 90-ish miles per week right now. I feel I'm doing amazing for me! Pushed myself to do a climb yesterday that I've only done on the tandem before. And it wasn't too horrible!

That's a good thing!