Windows 2012 Server - Creating an exception for a block rule in the firewall

Hy, ya'll!

I have to deploy a rule to block all outbound traffic towards port TCP 80 regardless of the destination IP, so I set up an outbound "block" rule in the Windows Firewall specifically against that port. it was straightforward and works like a charm. However, I can't seem to find a way to add one single IP as an exception to this rule.

I tried creating a new rule allowing all traffic to the IP I'm attempting to whitelist but, from what I can gather, the blocking rules in the Windows firewall take precedence over "allow" rules so that explains why it didn't work.

How can I work around this? All I need is to block outgoing traffic to TCP 80 on all but one IP. 

Thanks!