I picked up a 100' batch of this Beldin wire. Best price I found online. 5000UE 12 gauge was what I got.
As for speakers - You will not get the same sound quality capabilities with in wall speakers, dollar for dollar, as you can get from standard speakers. So, decide on your look, your budget, etc. Do not waste your money on expensive speaker cable, it just doesn't matter IMO.
I am waiting for a set for home theater to be delivered. I bought them based on reviews, technical data and customer service. Read through their forums too. They have other wood finishes on the way that are not on their site yet (What I'm waiting for).
For me, I am waiting for the speakers to arrive and get them placed where I want them before finalizing my wall jack locations. This means getting the wire in the wall with extra that you can get to after the drywall is up. Either that or put in a pull string or two so you can get the wires in later. Or, conduit. Or, a combination of methods. Worst this is you have a speaker jack in a bad place.
I still use my old Onkyo 909 pro to run all sources into except PC. The multi souce settings and the HE 10 sensor, controlled by the remote, is/are used to send the same/second sound source into the bedroom such as CD's that were burned on my PC. Now this requires that wires run inside the house or the wires can be hidden with basic DIY skills. I tried some wireless outdor speakers and they were terrible. That was some 5 years ago.Guess I am still stuck on big speakers like 901's and DCM Timewindows. 901's are real tough to match up with most speakers.They are not great for surround sound systems unless one goes high dollar and has patience. The 901 EQ with the Bose plus the center and rear speakers sound half decent. I did it with 100 watt Kenwoods for rear speakers and a decent center speaker from Infinity, but; the DCM's are used as the multi source speakers as they sounded terrible in the surround mode as rear speakers. I would not recommend trying this project with 901's.