Question one: Any thoughts or suggestions on my current setup (excluding videocard. I know) mainly used as media center and gamin pc.
Looks good to me.
Question two: It has been running for one week so the thermal pad should be settled and the cpu should be cooling as expected but my idle temp is around 50 degrees celcius which seems high, want to overclock but that temp is throwing me off, just looking for second opinion before I atempt anything.
50 degrees Celcius isn't bad - for a prescott. However, I'd be more concerned about the load temps; if they're strangely high, I'd advise you to beef up the cooling before overclocking. I'm sure the Sonata has your airflow done and over with, so I'm talking about a new HSF.
Also, make sure your RAM is ready for the task. Everything else looks fine.