Great to hear your tank is stable, it's a wonderful feeling when that happens.
Just a quick thought on Mopani wood, it doesn't need to soak for weeks. It is naturally heavy so it sinks right away. I soaked my piece for a week, changing the water daily, and have had no issues since adding it to my tank. It didn't even grow any white fuzz. My only complaint is all the pieces seem to be small and chunky, I'd like to find a thinner piece around 16" long.
I'm looking forward to your pictures.
Wouldn't you like to beside the seaside?