multiple locations??

My company is a distribution warehouse. We are opening a second distribution warehouse in a different state. I have been tasked with finding a way we can keep AP and AR for both locations separate for internal usage, and then be able to funnel them together for external usage. I am told that our inventory, OE, and PO should be kept together as one for both locations. What is the best way for me to start or set up this process in Sage 300? Any help or guidance would be appreciated.