Looking good Peter, looks like a great solution for your space there
In regard to what Fred is saying, I think many of us who won't actually spend much time near our scopes,
over engineer our support piers 
If on the other hand you plan to walk around while your scope is imaging or indeed look through it, while standing on the same bit of concrete, well, that's a little different and while a monolithic monstrosity may not be required, I think good isolation from your feet and body weight is indeed a good idea, I've seen the effects of not doing this
Mike