It's fantastic when you start getting reults like that...
.. well done !
The fact that you are getting Double '0's within 12 hours says your cycle is pretty much over... but obviously, the longer you can continue to prove it, the better.
I didn't fully stock after my cycle...i added a dozen or so inch long fish and continued to 'up' my bio-load in weekly stages.The theory behind our fishless cycle is, though, one that allows us to fully stock straight after our cycle, so it is possible should you choose to.
There is the chance that the bogwood MAY lower your tanks' PH once you introduce it, which brings me onto my next point, a PH 'buffer'. I have soft water like yourself from my tap so i have to add a good handful of Coral Gravel to keep my buffering capacity high and stable, therefore a higher and more stable PH. It's something you may want to consider as a PH crash after your cycle can be a nightmare (!).
Best of luck with it, always encouraging to see a great (first?) fishless cycle.
Terry.