I was not looking for binding or paid for advice here. I had Googled dual citizenship and quite a few results came out of this forum actually.
I was looking for any others that might have been through similar.
I have been in contact with both a lawyer and the Spanish consulate, but the rules are somewhat cloudy even for them.
As someone correctly stated, I could not be left stateless.
Regarding “renunciation” I’ve yet to find evidence of it ever being contested.
However, despite slightly shirty responses I’ll leave this thread here for now. I’ll come back when I find answers and might actually help someone else in future.