The OC-9ML/II is a very good cartridge. It will work just fine in your arm (it is generally forgiving of arm mass). You can always add more mass to your arm if you think it would improve performance.
If you can pop for a Herron phono stage, even a used VTPH-1mc is a great bargain, it is well worth the investment. (I use ALL Herron Audio electronics, nothing else in my system.)
If you can pop for a Herron phono stage, even a used VTPH-1mc is a great bargain, it is well worth the investment. (I use ALL Herron Audio electronics, nothing else in my system.)