U may be right but we still know nothing about kabuto's potential nor the amount of chakra needed for the edo tensei, I mean as long as kabuto is free those summon are in no danger.It costs a lot of chakra to resummon every shinobi that is being captured. Deidara was only one summon. I think it would be wiser to keep some chakra to save himself if things go wrong. He might not even have too much chakra left.
One thing I'd want to see is kabuto's face when he knows that sasori and deidara are imprisoned and shin is back to the world of the dead.