Hi Jlb3h0,
Honestly, in your situation you may have the speakers you need already (the 901s). If you went for some monitors or small floorstanders it doesn't sound like you are going to have the opportunity to set them up they way you'd like for soundstage and imaging. So I'd just have something with decent full tonality, set them out of the way, forget about them and enjoy the music. The 901s do a decent job for this. I honestly believe for what you can get them for the 301s are even better for this.
You can get a pair of factory refurb 301s with factory warranty for about $250 I believe. For background/passive listening they sound great. Good luck.
Cheers,
Scott