I didn't make my own broth, and used vegetable oil instead of schmaltz. I also put chopped dill and parsley in by matzo balls. Definitely use seltzer for the balls - it makes them lighter for sure.
I over toasted (by a lot) my first batch of coconut, so I had to improvise a bit and add more almond. It was still good - a bit too meringue-y. The problem was the batch of coconut I forgot about and burnt was long shred and all I had left was short, so I didn't get the yummy and pretty coconut look. I also didn't get around to dipping them in chocolate, or taking pictures before we started eating them (the whole reason I picked the recipe)! Oh well. I'd make them again.