RP-600M Mk2

The sound isn't for everyone, so do research on that vector too, but the Klipsch RP-600M (about $350 new at Crutchfield) are EXCEEDINGLY efficient - 96db! - and would bet more than adequately powered by that sweet Sansui. 92db or higher is considered "gold standard" for a speaker being very sensitiv

Well my advice is to buy used. You can take some chances then and sell without loosing money if you don't like it. For metall it can be tricky to find a good match.. I would stay away from anything with metal dome tweeters. Find a pair of used Dalis for example. And a used Denon or Marantz amplifier

That is a large living room. Unfortunately the Klipsch speakers are rear ported, and I have mine on approximately 60 cm tall Target stands. I have an open plan main floor, my audio listening rig is at the top of the L in an L shaped floor plan where the long side of the L is approximately 14.7m long

Like others say you'll need phono stage and an amp. You could go with a stereo reciver like the Sony DH190 which has plenty of power and a phono section. I recommend the Klipsh RP 500 MK II speakers. They are awesome and Klipsh did a really great job at making the mk II models. The new MKII RP model