If one considered buying instead of a DIY effort, I'd examine the active monitor offerings that abound the scene. It's an extremely competitive marketplace, thus the value is similarly high.
Yes all the big companies like Sony, Harman, et al,
have decent value items such as the OP listed, but the active two ways availed to us at your local music store retailer (or online at Musician's Friend, etc.) are just killer deals,.....with quality sound that was unthinkable at these prices just a short time ago.
God Bless DSP
IMO, the super cheap towers, or multi-way loudspeakers on the market today, really fail wrt the cabinets low quality,... ringing like crazy. The excessive contribution just colors the output nastily. My take...