As rdwj said - do eight gallons, at most.
If you HAVE to do ten, one approach you could take, if the beer itself isn't all that big - develop the recipe as if it were for a bigger beer, collect eight, maybe 8.5 gallons of runnings (off a huge amount of grain), boil it, then top off in the fermenter with a gallon. Not ideal, your efficiency will be crap, but that's my only thought. If your target is a 1050 beer, develop the recipe as if it were eight gallons of a 1060 (or whatever the math would work out to), then dilute it in the fermenter.