Which speaker cables for my system?

I'm currently at the start of building a new house. As I don't want to see any cables on the floor, I want to buy the "right" speaker cables for my system and future systems. I know this is not an easy task, as future systems are unknown, but at least I want to get it right for my current system. I use a Marantz SR5005 amp with Kef 2005.3 K2 speakers.

I don't think I'll ever buy large speakers, because the space isn't that large anyway ( about 4.5 meters by 5 meters, 2.7 meters high )

I was looking ath the qed silver anniversary as they are not bad and won't cost a fortune.

Any advice?

Regards