FishinRod -
Two 1.5 acre ponds or three 1.0 acre ponds ....
I think the primary consideration I would have is water supply - is this spring or well fed or run off fed?
For the kids anything more than 1 acre may be too big. For swimming, yaking, floats, a beach area, and fishing for panfish I think 1 acre is plenty of big, and you could certainly go smaller depending on the design of this pond.
Maybe you could do a .75 acre kid pond and a 2.0 acre adult pond.
