Setting up Bluebird houses

When we were looking for our house, Wifey and I envisioned getting property that had a lot of wildlife on it.  Although we have a little over 3 acres, other than stuff living on the ground there doesn't seem to be an abundance of flying critters.  That's something I want to remedy.

A few years ago someone gave us a Bluebird house to mount.  We never did so I've been researching what's involved.

From what I'm reading, it needs to be mounted on a metal pole 5' - 15' above the ground in an open area.  It's recommended to not mount it on a tree so as to not attract predators or competing bird species. 

It's recommended to mount the opening toward the short ground cover so the bird can look for food from inside.  Its also a good idea to have a small shrub or two within 100' so baby birds have somewhere to fly and hide when they first leave the nest.  Having it face generally east is a good idea to help protect the opening from harsh winds.  In our new neighborhood, we have most of our storms either come up the East Coast from the south or from the west.  I'll probably face the bird house toward the east.

The North American Bluebird Society recommends mounting the bluebird house prior to when bluebirds are looking for new homes.  Since they are looking for a home when the weather turns warm in the end of March it's recommended to mount the house in February.

I've read that if you want multiple houses, you want them 125+ yards apart.

I guess I have some thinking to do as far as where I can put the bird house.