I hate to be boring about this but I doubt that anyone can give you an answer. The best thing to do is write down what you need to support your operations (not easy to do!). Then go visit some similar units and see what their kit does that you hadn't thought of. Ask the users - both controllers/support staff and engineers/technicians - at these other units what is good and what is bad about their kit, and refine your original list.
Beware of turnkey solutions of off-the-shelf products. Think about future growth - will the kit be expandable? And ask how long will it be supported for.
And remember KISS - it's true!