What are you trying to accomplish?
How fast is your Internet connection? http://speedtest.net
It is not a good idea to connect multiple routers, without some network knowledge. It will work but would require proper configuration of both devices. Your wireless signals will interfere with each other if they're operating on the same wireless channel. A router also acts as a DHCP server to assign IP addresses, you only want one DHCP service running. http://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol
Here is the support page for your router. http://support.linksys.com/en-us/support/routers/EA6500
That being said,
Latency is the delay (ping time) in milliseconds that it takes the signal to travel to the server and back. The lower the number the better, but you'll definitely want a ping time of under 120 ms or you'll have major problems with online gaming. Ideally you want less than 80 ms ping to the gaming server.
Ping time depends on distance and number of connections. Your connection may have to be routed through 15 or 20 hops (different locations) to reach the gaming server. Each server has a delay (latency) due to the distances that the signals must travel. Try to choose a closer gaming server to lower your ping time.
Wireless router connections are not good for systems used for online gaming. Wireless signals are affected by many factors including wall density, electrical interference, directional antenna range, etc. Your latency (ping) may be 30 ms and wireless interference could cause it to spike to 200 ms or more.
For serious gaming or video streaming your best bet is a direct Ethernet connection. Ethernet is unaffected by wireless interference and will give you a rock solid, stable network connection.
If it is not feasible to run Ethernet cable the next best option would be a set of powerline network adapters http://isp1.us/reviews/netgear-xavb2101-powerline-adapter/
You plug one in by your router and one in the room where you need access and connect them to the devices with standard Ethernet patch cables. The network signals are transmitted over your existing home electrical wiring which will not be affected by wireless interference. There is still overhead in the connection but it is much more stable than WiFi.
Another point,
I don't know what you are expecting. however a super fast router or WiFi connection will not speed up your Internet connection.
A wireless router connects two separate networks and manages the traffic between them.
The wireless router typically connects your local group of computers and devices known as the LAN with the Internet, commonly called the WAN or Wide Area Network.
WAN (Internet) speed is determined by your ISP and is measured in Mbps.
For example, If you pay for a 3 Mbps Internet connection, you will get 3 Mbps.
No router or connection type will change your 3 Mbps Internet speed. This connection bandwidth is shared by your entire LAN via your router.
If you have a 3 Mbps Internet plan and one user is utilizing 2.5 Mbps of the bandwidth to stream a Netflix movie that only leaves 0.5 Mbps for all of the rest of the users on the LAN.
Super fast wireless routers and connections are designed to stream large files on your LAN quickly. The high speed routers permit fast transfer of files between devices connected to your LAN, however WAN speed is still limited by your ISP. The only way to improve your Internet speed is to upgrade your plan or switch to a faster ISP.
Good Luck...