40 internet camera setup but I cannot acces them all

Hi, I'm working with a dog kennel, trying to setup  Dlink DCS-910 internet cameras  so the owners of the pooches can look in on Fido whenever they wish by logging into the internet.  I have walked into this job and equipment was already there, so I'm trying to make it work.  A server was not available so I set up the Linksys RV042 4 port router to handle the load, I also have a 48 port Linksys gigabit switching hub.  I configured each camera with a static ip, example Camera 17 with an IP address of 192.168.0.17 and I also set the port for each camera, ie port 5017.  I setup port forwarding for each camera (with Linksys's help) and I had success but I could only access 1 of the 40 cameras, via the web.  I could access the camera by typing in the public IP and then adding :5017        ie,   96.33.128.43:5017     I also could only add a total of 30 port forwarding items.  Apparently there is a port forwarding limit in this router. I'll deal with that later by getting another static IP from the ISP and setting up an additional router.  Anyway, if I try to access another camera, configured exactly as the #17 camera but with the appropriate port number, I cannot connect to any of them.  What am I doing wrong?  The cameras are accessible via the local lan.
If I can't get this going, I guess I'm in the doghouse.....