You would need a VAR or Professional Services to tie this all together, because you would need to align features with what you need to happen. We can give you some general advice here, but there are quite a few details that will have to be worked out, that is is probably better for someone who knows all of the details of your network and who has done this before. The setup you describe could be complex just for a single institution. It is even more complex with two of them. I would get professional services or a consultant to do the work for you.