
I am planning to build a system(yikes) for basic websurfing and (HD)movie watching. I'd like to place it in my tv cabinet and connect it to my still to get HDTV and to the monitor that will be 4 meters away from the tv cabinet.
This is what I have come up with so far with a possible future upgrade in mind
Motherboard: MSI 785GM-E65
CPU: Athlon II X2 Dual-Core 245 BOX
Memory: PQI DD31333-2G2D (DDR3 PC3-10600 2GB ) X2
HDD: WESTERN DIGITAL WD15EARS (1.5TB SATA300)
Case: SILVERSTONE SST-GD05B
PSU: Enhance ストãƒãƒ³ã‚¬ãƒ¼ãƒ—ラグイン SPSN-050P (500 Watt)
Optical disc drive: LG GSA-T50N (Slim)
Fan Controller: Kaze Server 3.5 KS01-BK-3.5
Drive Bay Adapter for Slim Optical/Fan Controller PMU-012 (Sorry couldn't find an english website)
Cpu Cooler
1. Scythe Ninja Mini rev. B SCMNJ-1100
or
2. Scythe Samurai ZZ SCSMZ-2000
or
3. Scythe Big Shuriken SCSK-1100
Monitor: Dell U2311H
Keyboard/Mouse: Logitech Wireless Desktop MK250
Hopefully you can help me out.
1. Is 4 gb memory perhaps too much?
2. Has someone successfully fitted a ninja mini on this motherboard. im scared because of this post. Couldn't find any information about it on google either.

3. Do objects (like a couch) interfere with the wireless signal to the keyboard/mouse? 5 meter DVI cables to the monitor should work, right?
4. Any other ideas/suggestions/remarks on this build or specific parts or perhaps something offtopic?

5. tips on building?
Thank you for reading and for making this site/forum a valuable source of information.(and I mean this)