Here is what i know so far:
Determination + Discipline + Motivating: very important to look at these attributes, not only the "main " ones like attackin, defendin....
fabio mahseredjian ;paulo paixao ; claudio gaudino ; roberto de bellis ; alessandro pilati ; andy renshaw and meco all good for strength and fitness. ( Colbert---> high wage)
brian mcclair is good for set piece, meulensteen is another choice but..again high wage
U can look up for coaches usin followin method:
Set Pieces:
(Attacking + Mental + Technical) * 3 + ( Determination + Discipline + Motivating) * 2
>= 270 = 5 stars
>= 240 = 4.5 stars
>= 210 = 4 stars
>= 180 = 3.5 stars
>= 150 = 3 stars
>= 120 = 2.5 stars
>= 90 = 2 stars
>= 60 = 1.5 stars
>= 30 = 1 star
>= 0 = 0.5 stars