Hi

what is the budget????

BTW those speakers you chose are not up for the job mate they are not loud enough for the task.

the best speakers i can recommend in terms of loudness but not sure about cable length would be the: Logitech Z-5500 THX 5.1 Speaker System

OR

An even more powerful 7.1 system : Creative GigaWorks 7.1 S750 THX Speakers


BTW if your worried about cable length then why don't you go wireless?

This is a brilliant power full speaker system that's wireless but it's on the expensive side, hope it's within your budget becuase it's perfect for your needs: Creative GigaWorks 5.1 G550W THX Wireless Speakers

"Space has no boundary, that is empirically more certain than any external observation. However, that does not imply that space is infinite" - Bernhard Riemann