Have you gone back to your original placement of the insulators, Gort, or is this just for the sake of illustration? As I recall, we spent some time re-positioning the insulators to give you longer loops for the reversers. In your case, the location of the insulators might be important, since you're going to automate the turnouts.
David's statement, in general, is right. You really should use a separate reverser for each loop. That way, you don't have to worry about having two trains in different loops "fighting" each other for control. (In theory, of course, you can run any number of loops from a single reverser, as long as you're only running one train, and the loops aren't "nested" inside of each other.) But, practical experience has shown that Murphy is not only right, but also that he was an optimist. So, do your best to create bulletproof trackwork and circuitry, and you'll be close. Never perfect, of course, but close.
Here, you are going to be throwing both turnouts every time the auto-reverser kicks over, not just the one you want to throw. Are you sure you want to do that? Frankly, I wouldn't, and neither would Mr. Murphy, I suspect. For one thing, throwing a Peco takes more energy than throwing an Atlas. If you're going to kick two of them over at the same time, you will need a capacitive discharge system. (Get one of these anyway, particularly if you're using Peco machines elsewhere. Really. You will not regret it.)
As for the Peco switch machines, wire the contacts on the same long side together. Those will be your "common" lead back to the reverser. The other two control which way the turnout will be set, and will go to the remaining two leads on the reverser. (I don't actually have one of these reversers, by the way, so I'm assuming it has three wires for this.)
In the end, though, remember that these reversers are designed for a simple loop, and you don't have that on either side of your layout. I would personally go with manual control of the turnouts, and add some turnout-position indicator signals to remind you to set everything correctly.