I own 10 acres and have about two freed up with fences are coming with about an acre to each fenced in area. How many can I raise by alternating between these small plots?

First off, fix your eyes on the size of your cows. Go with miniature cattle. They mature to half the size of a normal modern-day bovine. Depending on how much grass you have you can easily split up those two acres into several smaller paddocks to move two or three (just to start) head around once every one or three days. And find ways to make use of the other eight acres in some way as temporary grazing areas. Cows are pretty versatile, as long as you have a strand of hot wire set up that they respect, you can graze them almost anywhere outside where they're "supposed" to be.