JAL's award chart is distance based. So there are no tricks or routings that can be used for a region based system. Your requested itinerary is 22,600 miles which prices out at 200k JAL miles. Also, JAL awards cannot mix partners so there no further routes you can add from Milan to other places in Europe since they would have to be on EK flights.
This is JAL's partner award chart. There is also a mileage calculator to calculate the distance of your itinerary.
http://www.ar.jal.com/ar/en/jalmile/use/partner_air/p_jmb/jmb_mile_ar.html