That is some beautiful material. The value beyond $8 - $10/bf for generic walnut around here would be specific to the material and your value of it....
As you have discovered, when you buy your cast iron router wing or table you have set the dimensions and corner radii of your usable plates or lifts....
But bag filters are not capable of filtering out fine dust to the extent that cartridge filters can (at least good ones with <1 micron filtration). ...