...This thread shows that the ipv6 notation is more complicated. It's good to at least use a smaller address space on a LAN like this, but I want the basic decimal notation.
Yes, which is why they shouldn't use those huge prefixes. There's an existing 32-bit address space represented nicely like 8.8.8.8 or 192.168.1.2 for local. Now that we want to extend the address space for more users, the newer ones can be like 8.8.8.8.6 without messing with the existing ones.