Antonio:I can't say what black fig would be ,as good as Adriatic jh for your particular climate.
Of course there is one,that is just as good and better ,here in my yard,but I am afraid it will not ripe early enough for you because it is a late cultivar and,you are more northern situated compared to here.
The fig I am talking is Italian 258
This past Summer,it was not even colored black as it should be,even here in my location,because ,it was a cool Summer,but it was ,delicious ,at the superlative.
I do not know if you got any spot in your garden with totally full sun,because it is a must,with this cultivar.
Best Regards