BTW, that is a -H model. They can't carry all those goodies at the same though. Too bad isn't it? :)
The B52-Ds with the "big belly" mod flown in Vietnam would carry 108 500lb GP bombs each and fly in cells of 3 aircraft.
An Arc Light strike, from even miles away was terrifying. The newer B52 models, without the mods, carried 27 500lb bombs, I believe.