I tend to be wary of Netgear as you may need to first log into their site to configure your router. Show stopper for me.
Go online and read the applicable User Manual/Guide(s) for the recommended routers. You may gain some advantage if a problem occurs. Charter cannot say you are using a router that is "not" recommended if you use their recommendation. Look for fine print caveats.....
5 wireless devices may be a bit much for the router if you expect all to be heavy internet users when active. But that will be much the same with any home/consumer based product. Wireless is inherently slower especially in places with other surrounding wireless networks.
Do consider some wired connectivity if at all possible. E.g., in the...