Unless you have: (1) very inefficient speakers, and/or (2) low line stage gain, and/or (3) low amp input sensitivity...... there is something wrong.
Your cart outputs .5mV and your phono stage gain is 60 db. I use two carts that output less than that (Shelter 501 at .4mV and Dyna xx2 at .28mV) into three different phono stages (JuicyMusic, Tavish, Blue Circle) that provide between 57 and 60dB of gain, and I have db's to spare. (In the past I also successfully used Denon 103R, .25mV output).
To give a feel for the overall sensitivity / gain profile of my system:
* My two pair of speakers are 89 and 93 db. efficient.
* I rotate a few tube line stages with gains in the 10 to 15db range.
* My few amps have input sensitivities in the 1.5 to 2.5 volt range.
I have plenty of gain and dynamics with all combos, never exceeding half on the volume pot to achieve 85 db in a large room, with speakers 9 ft away.