JavaFX client side application

I am thinking of developing a JavaFX client application to connect to my backend database server for retrieval of data etc and display in my client app. For this, i would also need an authenticate/authorization mechanism to make sure authorized users are using it. I could just use the database server as the authentication/authorization mechanism, or do you have recommendation for a Java based AA mechanism that I could use? (JAAS?) . My applicatoin would also need to display periodic updates of news etc to the client. I am not sure how easy it is to be done by the client, ie. i can set the client to poll the server every few minutes/seconds for new data, or I could do "push" data from server to client? I also need to use some sort of encryption for the transmission channel, ie TLS/SSL? as the application would be processing sensitive data. For all of these, should I even begin with JavaFX, or should I just use a web service/server to do it? thanks for any advice