What is available for WA for 8x10

In my infinite quest for infinite ways to spend money on a hobby,
I now need to know what is available for WA for a 8x10 format
camera. I am a WA user (24mm or less) in the 35 mm world. I am
now foraging into the 8x10 realm. Any suggestions for a lens
with lots of coverage?

A simple base approach, simplisticly, normal lens on a
35mm camera = 50mm, for an 8x10 it's 300mm.

1/2 of 50mm = 25mm, 24mm actual for your wide angle,
1/2 of 300mm = a 150mm on 8x10. and simply so forth.

Alex