Just thought you should know.
Tried out your mod. I'm using Bob's Mods, and I found a big sulfur patch not terribly far from my starting location.

Also, there are warning messages upon start about Resource not available, listing all the vanilla resources for some reason.

Can you give me the entire modpack you used?

I constantly keep up to date with Bob's stuff as it's released.
Do you want me to zip it all up and host it somewhere? Or, you could go here:
https://mods.factorio.com/mods/Bobingabout/bobores
That's got the sulfur.

I'll look into it, otherwise you can just screenshot the pack folder :)

Been corrected for next patch