Lynx Distributor Connections

Currently I have my house batteries running to a Smart Shunt, connected to a Lynx Distributor. Attached to the Lynx Distributor are the two cables running to the Quattro as per installation instructions on connection 1 & 2 of the distributor. One connection 3 of the distributor in the house DC connection to the DC panel. On connection 4 is one alternator. I am changing the alternators to the ARCO 275A alternator with the ARCO Zeus external regulator. This gives me 2 alternators to connect to the distributor for a total of 5 connections with only 4 connections available. I have no room to connect another distributor. Any suggestion on the best course of action? I was thinking for putting the alternators on the distributor connections and the house DC connection to the positive tab for expansion with an end line or mega fuse holder, but this does not give me fuse monitoring and seems a little sketchy.