Better way to set up my airport time capsule & express

[iAVERY]

So I was going to have the TC as the base station and have CAT-5 run to the other side of the house and set the express up as a roaming network in bridge mode. Is this the best way? Would setting the network up wirelessly and putting the express more toward the middle of the house be better? I wanted to do the first option so that my apple tv, HD homerun, and printer can be hard wired to the wifi. And If I have it set up wirelessly I would need to put the express in a spot with decent wifi to re-broadcast. What do yall think? If I have the express set up to create a network but keep it in bridge mode the TC created the IP address so would I still have to switch networks when I walk to that side of the house? Or is it all the same network since the TC is doing the routing and the express is just blasting out signal in bridge mode? Thanks in advance for the reply!