Speakers, speakers, speakers.
Without good recordings, good acoustics, good source and proper Pre/Amplification ..... no ticky, no laundry.
You have a 20x20xH? room, the potential for imaging is fab, but if you also like DYNAMICS/Slam, you'll need an amp that'll deliver clean grunt. To get speakers & amplification for $2G`s is a pipe dream, but ya have to start somewhere.
Hunt for 8ohm speakers with an efficiency north of 93db. Speakers that'll mate up nicely with a Bryston 3Bsst squ/3 (3B`s are a bargin) ..... that ought to fill the volume of your room for starters.
Enjoy the journey.