Brake fluid recommendations

Hello, been here awhile but don’t think I’ve posted. Bought a 2008 s6 2 years ago. Beautiful and fun car. Silver with silver leather recaro’s and silver headliner black leather dash.
Anyway, 50000 miles later time for brakes. Have stoptech slotted rotors and EBC reds to go on. Do I stick with low viscosity brake fluid or something else/better? Also, any other hardware recommend to use new? One last thing, is vag-com required for rear brakes?
Thanks in advance,
Todd