Bruce
Herd Master
@Senile_Texas_Aggie probably doesn't want to wind up with 14 new LGD puppies. Bad for the marriage and sanity.
Given Max is already neutered any pups 99 has would be "traveling salesman" mutts.
Are the dogs long or short haired STA? I'm not sure an electric fence by itself will keep them in unless you have a lot of strands maybe a foot apart, 5' high, tightly strung and very hot. You are going to need strong wood post corners properly braced. And more inline braced posts for the gates, can't have too many so you can get into, out of and through the fenced area. I have 1 acre fenced including the pond and I would say that was minimum for a full grown GP.
Of course once you've got proper fencing, no reason not to put up an animal shelter for them and the sheep or goats you'll want to get