depends what and where u shoot...
what = full body, 1/2 body or face only
where = studio size, aka distance to play.
for eg... if a studio is rather spacious, wanna try full body, can use a 85mm or 135mm even, doesn't have the distortion.
if studio is small, try full body with wide angle only.
settings wise, ask the light meter... adjust accordingly... else u should ask the owner there, he/she would be able to help you. Cos with variety of strobes, there is different settings to use, and also adjust the power accordingly.
There is no 1 best setting... since there is different effects with each settings.