@DFOXpro
While BZGold2 isn't "removing" (but "modifying") the "SE-Processing-Unit-Holmium" it should be possible to add an "if-then-else" to check if BZGold2 is added and modify the above to utilize gold instead of Holmium. (I think. It's been a while since I've programmed, and I haven't programmed with LUA yet.)
While trying to identify the issue with another mod, I did see that it had a conditional check for a mod and changed the interaction based on the presence of that mod. How to do this under these circumstances, I do not know, but it should be possible.
I'd really like to see this working with the All the Overhauls Modpack mods.