Pioneer 6902r speakers for rears....Cost u in used (5~6K)!Used
Kenwood Mp5043u,sub woofer out Hu....Cost you around (6~7K)!Used
BTW,My opinion is to get some good sounding components like Pioneer 1720c and use them on front stage....Cost you around (6~7k)!Used
Since your budget is 10k therefore only some selected options are available...!