Upgrading to B6/7 struts for Facelift B5 S4?

As per the title - having recently purchased a 2001 facelift S4 - I am worried by the lack of breaking. Having owned a UrS4 which ended up running some rather large Porsche 'Big-Red' callipers - I am keen to understand if I can put later struts on the B5, be it B6/7, with later RS4 callipers etc. Additionally will this require a rear brake upgrade to address any bias issues?

As a side - I understand that the use of Yellow EBC pads is regarded by some as a stage I upgrade - is this correct?

Apologies if this has been asked before - I couldn't find anything in relation to this topic.

Br,

Damian

Now that............... sounds like a plan!!! Thanks!