I think we will be of more help to your local guy by NOT giving our input and letting your local guy do the job you hired him for .... designing and installing an all around working system.
If you don't trust your local guy to design and implement a functional system to suit your needs then you need to hire someone else.
good luck
Peace - It does not mean to be in a place where there is no noise, trouble or hard work. It means to be in the midst of those things and still be calm in your heart.
