The second option.What are your plans for the creek on the left of the block? Graze through it or fence it off and just walk them through it when moving between cells?
As the lane fences cross at right angles then we can use the area that they can't graze/trample as a form of "leaky weir" made of grass.
With water available on either side it will minimise traffic back and forth, and we don't need to graze the banks hard or often.
Really just enough to maintain the area in a good state, or it will "rewild" itself with gorse