About coaches signing & their role?

Hi everyone,

I wonder which one do you prefer more, signing coaches to train both senior & youth team or separately signing first team coaches & youth coaches?

I usually sign good youth coaches then offered them role as coach so my senior & youth team get equal good training rating and also it save the salary budget.

Maybe you guys have another approach?

thats the general idea. but for myself I buy good youth coaches and good First team coaches