Spliting Web Traffic without Load Balancing

Just a quick question....
if i wanted to setup webproxy to give the local network access to WAN1 Internet, but have a selected group of users "special group" to WAN2 Internet, I would have to set up 2 multipath rules similar to this:

Rule 1 (special group):
Source (special group user network object)
Service (webtraffic)
Dest (WAN2 Interface)
Pres (source/dest)

Rule 2 (local network)
Source (local network)
Service (webtraffic)
Dest (WAN1 Interface)
Pres (source/dest)

Does that sound right? i just wanna check before i go changing something.
Thank in Adv
-Corey