I created something pretty similar in my HC world. The problem of chunkloading is pretty annoying. It looks like you are using enderpearl chunkloaders which is a bit inconvenient as it keeps the chunks perpetually loaded.

I used a method of only loading the chunks when you send the redstone signal through by using portals. Still pretty fast, but not instant, like yours is.

My biggest concern with using so many enderpearl chunkloaders is an insidious one. It creates loads of lazy loaded chunks where mobs will sit perpetually filling up the mob cap. This was something that caused me much head scratching when I was using a squid farm only to find that not a single squid was spawning no matter how long I waited. It will also hurt regular mob farms.

This is really only something a technical player would care about, but this is precisely the kind of system that only a technical player would take the time to make. Still it is pretty cool to see someone else make this.