As vicious1 pointed out, there aren’t any compelling reasons to go to 16th. But you also asked if there was a good reason not to go to 16th, and I haven’t heard any good reasons not to. You built the machine, you can change the software (although you really just need to change the settings) and you can try it. I’m guessing there will be no perceivable difference.
One not-so-obvious benefit of 32nd is that it’s common here, and that makes comparisons to other setups easier, if you are having problems.
IMO, There’s more interesting things to set/change/adjust than 16th steps. Changing it is pretty low risk though. Have fun!