Does this work with Deep Core Mining? afaik DPM only makes it spawn ghost ore patches after the ore has been mined so that shouldn't interfere with RSO's generation?

Atm though it seems like the answer is no(but I could be just unlucky).

If it doesn't add own ores but depends on looking at map generation while it's happening it might not work properly. Adding optional dependency on RSO can help if thats the case.
I would need to take a look how it works.

I looked at the mod and I don't see anything that RSO could interfere with.
And due to way the mod is intended to work it's pretty difficult to test without editing it first.