Hi there thingle!
I have a couple of articles for you that should help you set up this network and optimize it. First, if you are using a password protected Wi-Fi network, you will want to use the WPA2 security protocol for the best speed results. The reasons for this are explained in this article:
You will also want to reference this article for the basic router settings that will be best for usage with your iOS and OS X devices:
I also have one more article for you that will help you set up multiple routers for use as one network:
Thanks for being a part of the Apple Support Communities!