This is a great idea. I personally think that Nagato, Itachi, Madara and the rest of the army are just too strong. Ginkaku/Kinkaku could totally seal Hiruzen as he wails on about The Will of Fire or Tobirama angrily muttering about the 'damn uchihas' 'senju rule uchiha drool' under his breath.
Seriously though Kabuto just has more and there are some HUGE names in there. Minato can take a HUGE portion of them on but it's still not certain to say any of them could win. I can tell loads of people are going to just regard the other edos as 'fodder' but really there's not much ANY of them could do against Hanzo's poison and ALL OF THE JINCHUURIKI. Raikage's Spear & Shield. Tsuchikage's steam imp. Zabuza's mist. Big problem. Do not rule these other edos out, a few of them combined could topple the opposition.
Edo Madara with Itachi's help could stop Hashirama. Hashirama is the biggest threat here so I hand this to the Edo Army, there's just too many of them. And that's even WITHOUT the jinchuuriki.