OK. The reason I was asking is due to the fact that climate conditions dictate what type of sign material you need and how deep to set posts in the ground. I absolutely have to use heavy aluminum with a vinyl overlay in order for my signs to stand up to the weather here and all posts have to be down at lease 3’. You don’t have to worry about such matters. UV damage is probably a bigger concern for you. I recommend you talk to at least a couple of sign companies and ask about what materials will hold up best to your hot sun. I’m familiar with Tucson after briefly owning a park there.
As far as fencing is concerned, put it in yourself and save some serious money. It’s not hard to do once you get the hang of it. Just don’t begin your efforts in a place where everyone will see your initial attempts.
One thing regarding fencing is to never buy from Lowe’s or HD. The material is pure c**p. Buy directly from a real fence supplier and you’ll get thicker material with better UV protection. Buy enough and you’ll get contractor prices and delivery and good tips on how to install it. Whenever I do a big project like this for myself or my clients, I find I can almost always beat those “low everyday prices” lies and get better materials at the same time. Lots of cheap labor in that town and you might even find workers who have installed this type of fencing in the past.