An enigmatic drink, in the best possible way. We went with cane syrup and pulled it back to 15ml. Likewise the celery bitters, we dialled down to two dashes...maybe one might have been enough...perhaps it's just us but a little bit of celery bitters goes a long, long way.
I know this response is quite a bit late, but I use a small atomizer spray bottle for the spritz (I keep these bottles on hand for absinthe, Laphroaig and orange blossom water).