Building a 300 PRC

I'm looking to use the AICS style mags. The action is a 116, 300 WM detachable box mag. The only thing i've really seen that is turnkey is the Yankee Hill Machine MARC chassis. This is the first time doing something like this, so I thought I would ask here. The barrel was just ordered, so I'm guessing I have plenty of time to figure out options. I've read a few 300 PRC build threads here, but they all seem to peter out before coming to a final conclusion. Your opinions are appreciated.