How many 85 year olds...

[TenFiftyFour]

Let's assume the same general rules, minus the fight training. You would have to figure that most of the 85 year olds would have inferior speed and balance, which will certainly work to your advantage. Also, they will have less stamina than the 5 year olds, as well as a slower recovery time should they get knocked over by a non-knockout blow.

How many can you take? I'm still working on a number for myself.