Woo hoo! We reeled in another one !

Oh no dear , you're not nuts but do consider the source.

Your training plan looks very good.

The only thing I would recommend is to try to get in a progressively longer road ride each week, say on Saturday. I don't know what kind of distance you're accustomed to riding right now, but ideally you should be able to comfortably ride about 150 km (~100 miles) before the brevet. I know that many believe that if you can comfortably ride 50-75% of the distance before the event, you should be able to ride the event distance fine, but I would prefer to be more at the 75% end.

You probably have the strength and stamina to handle the 200K. You need those longer rides to train your butt to deal with about 10 hours (plus or minus) in the saddle, and to train your brain to accept the concept of that much time riding. The latter is the hardest, IMHO.

Also, I find I do much better on a long ride if I don't ride at all the day before. So Friday is usually "off" day for me, and I do my long ride on Satuday. That's what works for me though, it might be different for you.

You'll defintely want to taper off some the week of your event, cut back on the rides a bit to conserve energy.

( Just don't do what I did !!! - I had a cold all this week so I didn't ride at all, but I convinced myself that I was OK to do a 200K permanent brevet on Saturday. So I did 70 miles of it in chilly damp weather, felt like crap, bailed out, and now my cold is back with a vengance That, my friend, is being an idiot. )