Empire EDR9 users: Need advice

Since yesterday, I am also on the Empire club. Just received my NOS EDR9 cartridge. Needless to say I was inspired by Raul's thread. Unfortunately I dont have a phonostage to support 100 kohm loading impedance, mine is standard at 47 kohm. I am tracking at the recommended 1.5 grams. I have set the phonostage gain for 5mv. Am I doing okay with all these settings ?

What is the break-in period for this cartridge (it was bought NOS) ? Currently it sounds nice but closed-in.