Victim System Control

Hello, guys

I am trying to take a control of a victim PC and as a newbie hacker I have some limits you know :p

But anyways this is what I have done so far:

I have been doing my recon for long time now while doing a recon I managed to get the victims email, skype, viber, OS and IP

The problem I am having is victim IP is dynamic

If the victim has a static IP I could have used nmap to scan for open ports... But now I have no idea what to do from here.

what should I do from here I tried to mail the java exploit as a link but the victim never clicked the link.

THANKS