[BiggKidd]

First welcome. Second don’t try and take on to many projects at once. It’s nearly every homesteaders biggest issue.
Dexter cattle are probably your best bet. They are a small homestead breed and heritage animals at that! So research them.
Fencing depends on many factors. First and foremost don’t over space your posts. I think properly installed field fencing is about the best middle of the road option. ANY and ALL types of fencing needs to have proper corner braces and stays. Most importantly fence has to be tight, real tight and then tighter yet! The tension is what makes it solid enough to discourage large animals from pushing through. If they feel any give they will keep working it until they walk through it… This not meant for cows specifically but all large animals to include BULLS and BOARS and BEARS which can be some of the worst fence destroyers known to mankind. These don’t even have to be your animals they could be from 5 miles down the road and smell one of your ladies in heat and tear down the fence to get to them. Bears and deer on the other hand pay no heed to fences if where or what they want is on the other side!

Hope this helps.

Good luck!