I'm in the process of putting together a starter system for my 23 year old to play his vinyl. At the moment I've got my eye on a Nikko NR-300 receiver; Kenwood KD-44R (DD Turntable); and a pair of either POLK 19" or Infinity Sterling SS2003 speakers. Other than my DUAL 1219 turntable, I haven't bought used equipment previously. Any suggestions/opinions on above items would be most appreciated.