Hi I am stating to create my own home W/shop in the UK,

I'd like some ideas on grinding lathe and cutting tools for a 13" lathe
& a 10" shaper , Im ok on the shapes, what I would like to know is;

Ideal size of grinder wheel ?(bigger the better?)
grit grade ? for roughining and finishing
bench or pedestel (or Ive read on here to mount a (bench grinder) at
chest? height)
Tool rests (need 'em or not?)

So really I'm asking, with practical experience and hindsight, what's
the best set up?

TIA

Lee