For rotational grazing to work best, you need to keep your grass in phase 2 of it's growth cycle. The cows like phase 1 grass best because it is young and tender, but there isn't enough leaves to make full use of the sun. If you keep them on a section too long, it takes longer for that section to recover. And you don't want to let any grass reach phase 3, where it is full grown. Then it is also wasting the sun.
The challenge on such a small lot is to make right number of paddocks, and making them the right size. The amount of water {rain or other wise} will determine how fast the grass rebounds after each grazing. The number of cows will determine how long they can safely graze each paddock. And the number of paddocks will determine how often they have to be grazed. You change any one of those factors, and it changes all the others. But it is the most efficient way to graze land.
Water and fencing are two things that can drain profits. But I have seen a central water source with the paddock fences laid out like spokes on a wagon wheel. And by using electric fencing, it keeps the cost down, and the paddocks can be changed without too much trouble.
Larro
