Long posts are good, saves us the delay of asking lots of questions in response. Planning ahead is to be commended. You are already one step ahead of most.
I use a large hen house with two floors - 80 sq ft and about 105 sq ft (concrete board, livestock fencing, and hardware cloth), inside a large run (about 1,000 sq ft) of livestock fencing plus chicken wire, inside about 4.5 acres protected by an electric fence (5 wire, 3 hot, each wire is about 2/3 mile in length, charger is rated for "30 miles" - 1.2 joules. Hot wires are 6", 24", and 48" high, middle wires are tied to grounds, so contact between any two will get your attention). A second house and (larger) run is being constructed in an L around two sides of the first. The third side is my barn. As I drop small dead trees, I tend to lay them out along the outside of the fence as a digging deterrent - sandy clay soils make burying wire both impractical and expensive, the clay is quite corrosive to metals.
Its effective for ground based predators. I've taken several losses to aerial predators - its impractical to try and string wires over the 1.5 acres of open pasture, and I trust the remaining, under-brushed area, to provide camouflage. With some success.
If you are willing to take some losses, a set up like mine may be effective for you - two years ago, I was still living in the "Lost Pines" are of TX, we had similar predators. If the idea of losses really troubles you, for whatever reason, then I would recommend following
@cmom's advice on set up - LOTS of experience there to learn from.
