Help me do the comma

[Ben Davis]

Ben Davis,
do I have to do both 1.) and 2.) in order to be consistent? In my above sentence, putting them before and after the "and" as in
"has a nice flow to it, and, more importantly, that ..."
looks excessive to me

Consistency would be regularly applying each rule, not applying both rules in concert. In context of your sentence, I would omit the comma before the 'and' for two reasons:

1. the 'and' is being used as a standard conjunction rather than at the end of a list
2. it would make the sentence read as if 'and' is a subordinate clause when in reality, it's the 'more importantly' which is subordinate

So you score points from me on your usage and I'll give you extra credit if you can spot the Oxford Comma that I omitted from bullet 2.