I'll be glad to see You, if you will have time to arrange a meeting with your English-speaking followers. ))
I think the Golden Ring is a good choice for travelling. There are many interesting things to see.

http://www.goldenring.ru/

Cheboksary or Kazan directions nice in the summer, I think, and it's nine hours by bus from Moscow.
The Golden Ring is on the way to the Cheboksary and Kazan, so you can save time if you will decide to take a trip to Kazan after Vladimir...