Thanks everyone for the welcomes.
I think we are going to build a coop big enough for them to roost and lay eggs and have a covered hoop house for them too. If we need to, we can water and wind proof the run. During good weather we want to use a portable electric fence and pasture them. The Guineas will be free ranging, as we want them to eat as many ticks as possible. If that doesn't work, we will build an addition. We want to build something smallish, so we can move it in a pickup to a new house. We are renting while looking for some land to purchase.
Are there any breeds people found to not be hardy enogh for Shd. Valley? We are getting hatching eggs for Blue laced red wyandottes, blue orpingtons, and welsummers. 
I'm looking for anyone who has Guineas for sale too.