You just need the display once to setup the receiver as a base station. The screen doesn't need to be with the base after that. Just to set it as base vs vehicle and channel ID and all that 

You still need the radios you have on the 6000's since that's how they're communicating with each other. So one SF6000 on the plow with radio and one in the field as the base with radio. Put on the same channel and away you go basically. Do a 24 hour survey on the base if you think you'll need to come back to that field or add on to that system in the field later on down the road. 

Lot of people use JD receivers into the tile plow stuff, should just be an adapter from the 6000 to the ag leader side