Charging system and other wiring change help needed

Trying to get some wiring done and need some àdvice from the experts here on FABO. I decided to put a plate over the area for the bulkhead connection and rewire from that point forward but bring my needed wiring out from under the inner fenders to hide it. I'm working on the installation of the ignition box and the removing of the ballàst from the system. Here are the questions I have at this point. From the voltage regulator comes a DK blue wire that goes to one side of the ballàst. That wire is tied into a wire that is DK blue with tracer that goes to ignition and they slide down over terminal on ballast. On other side of ballast are 2 wires as well. One of them are DK blue and goes to POS side of coil, the other wire from that post goes back to ignition switch as well but different terminal on the switch. Now since my ignition box has its own coil wires for both the POS and neg I am assuming I don't need to run the wire that would have been from the ballàst to coil or the original wire from the neg coil to the distributor. I've also read and have been told on this forum no other wires except those from the ignition box should go to the coil. Is my thinking correct?
Next is the positive wire from the alternator going back to the battery area since it is moved to the trunk. I am planning on putting in line a 50 amp maxi fuse assembly to protect that circuit and wire. I would place the fuse near the solenoid but will a butt connector be a good way to tie that in to the 8 gauge wire I will be using?
Thanks for any help. I will have more questions as I go forward. It's taken me a while to get to this as I've had some back issues that have kept me from doing much work lately.
Thanks Rod