[rnln]

stomachmonkey,
wll, there are reasons why I hve that much devices for what I need. I used to have more routers behind a switch and it used to work when I had DSL. I am not arguing that it will definitely works with cable, but I am looking for solution which allow me to have at least that many devices.

Basically, to make it short, the switch stays with the cable modem. 1 single cable run to up stair to a router for 3 or 4 computers. In the near future, I will need another router there (up stair) for another set of IP addresses.
Another cable from that same switch to another router to take care of down stair. This will have 2 computers.
I don't want wireless at all to these computers, unless for guesses.
On the cable modem, there is only one lan port.
For a second, you can see now that if I use less number of routers, I will only have one set of IP. If I set all router and modem at the same place, I will have to run cable everywhere back and forth.