I'm a big fan of Marantz receivers, but I think I'd strongly consider the Outlaw 1070. It retails for $899. The other I'd consider strongly is the Marantz 7001, I'm not sure what the retail is on it but I think it is under $1000. Marantz sound quality is excellent.
For DIY speakers there are a lot of good companies out there. I built my front 3 and will be building two new rears soon. I went through GR-Research. Go to
www.gr-research.com I believe. I built the AV/3 for my front left and right, the AV/3s is my center. I'm going to build a pair of AV/1RS for my rear surrounds very soon.
http://cgim.audiogon.com/i/vs/i/f/1141859475.jpg
http://cgim.audiogon.com/i/vs/i/f/1141859600.jpg
http://www.gr-research.com/
The other DIY speaker company I'd look at is..
http://www.rawacoustics.com/
They have a wide variety and they often work with Danny at GR Research I believe.