So are you saying I understood the diagram wrong or I just worded incorrect. Because it seems pretty straight forward to me.
I am pretty sure swapping 4 outlets is within my "limitations".
Forget the AFCI it is not intended to be used with motors or ballasts all of which will routinely trip an AFCI breaker.
Do not use a GFCI breaker AND outlets. Just like you wouldn't put a GFCI downstream from another (on the load). It will cause tripping OR possible non trippings.
If your using multiple gfci's then yes, your initial interpretation of the diagram is correct, do not feed outlet 2+ from the load of outlet 1, parallel the outlets leaving the load unused.
Tell that to your local city inspector. As an electrician you have to follow NEC 2014. There is not a room in your heated area that does not require Arc Fault breakers, unless you live in Chicago and have a conduit system, then you can use afci receptacles. Gentlemen you cannot come on a public forum and tell somebody they don't have to follow the national electrical code?
Don't follow code unless you want to burn your house down and then try to explain to your insurance company why you did the work with no knowledge of electrical code or installation. I'm sure they will be real pleased to hear that story. God forbid you lose a pet or worse a family member because you followed poor advise from someone on this forum
GFCI's do not prevent fire. They are designed to save people. Arc faults do prevent fires, but, there are constant arcs in a motor, and therefore trip arc fault breakers. By far, the most common cause of electrical fires are arc faults.
I would never place any of my aquarium equipment on a GFI. I do have a ground probe in my water to prevent me from becoming the path to a dead short, plus, if there is a neutral leak, it will just go through the ground, not me.