My personal ethics are based on the libertarian "non-aggression principle," in other words, don't violate the rights of other persons, and beyond that, do whatever you want.

This would be deontological: you are ethical if you are following the rules.

Per my understanding of it, virtue ethics looks to the traits of the individual moral agents. It is good to be a compassionate person. A compassionate person is more likely to give to charity, and so giving to charity may be indicative of virtue, but a person is ethical for being compassionate, not for the act itself.