Cisco Wireless :: RV180W / WAP121 / SR2016T - Wireless Network Setup

I recently purchase my first Cisco products for a network for our church. I have a RV180W router, WAP 121 Access Point and a SR2016T switch for our network, which is just pier-to-pier at this point. We have 5 computers connected with ether net through the switch and all see the Internet and work fine. The wireless connection through the router is working fine with our wireless devices (laptops and i Pads). Where I am having issues is with the AP. It is in different area away from the router being powered through POE instead of the regular power connection.
 
My problem is this: it takes FOREVER to connect to the AP and to the Internet, even when sitting directly under the AP with full signal. Once connected, it appears to allow Internet connection just fine, but getting to that point takes 15-20 minutes sometimes. Also, when I come back the next day, I have NO signal at all, as it seems the AP has "timed out" due to inactivity or something. I have to reboot the AP and the router to get it all back up and running again. I need for the signal to stay up all the time or at least come on when someone connects.
 
So, what am I doing wrong here? I have recognized and authorized the AP through the router config, security is set up fine and I can see it once it comes up. I have the AP set up as a completely different SSID, although I would prefer to have the AP as merely an extension of the router's wireless network if possible.