You actually only
need the Norton 4/8 everything else is extra

I can promise you for a fact that you can produce a very very good shaving edge with just that hone, and if you can't then all the extra stuff isn't going to really help anyway...
Just my opinion with a wee bit of honing experience with that particular hone thrown in
That being said, I would snatch up the larger PHIG for $19.99 all day long, and a DMT 325 and the King 1k, with that arsenal you can literally hone anything

for a few lifetimes