I would highly recommend going with the fiber run. I have done installs with even shorter runs using fiber. I would agree with a larger pipe, that way if you need to pull additional fiber, you have the room to do that. Make sure they put a pull string in that conduit.
As far as the rooms go, I truly feel that wired is a better solution. I have wireless in the house, which is great for some basic thing. However, when you start streaming HD/Blue Ray movies across wireless, you will have buffering issues. I've also tried the Ethernet over Power adapters, which work some, but again when you get to the HD videos you start to buffer.
My wife and I are planning on building a house in the next couple of years. I'm planning on running a minimum of two runs to each room, some with 4-6 runs. I won't be running any coax in the house. You may be asking why so many runs. My family has no traditional TV in our house, which means we stream everything. Then I also run a VOIP systems. The next house will be automated along with Video Cameras for the security system. Don't get me wrong, I am not your average computer person in the home.