Good plan if you planning to go in this days (sept- dec19) this days are bit easy to explore due not so hot and humidity you can enjoy ur honeymoon here, if you like parties and alcohol many beach have sea sport also you can enjoy.
You have chosen a good time . i also visited there a week back. if you are planning for goa please do scuba diving or underwater diving it is not so costly but gives you a unlimited pleasure .
night life of goa is unmatched relate to any other city in INDIA . have a good time .. chears for you and your partner..