I have just done my rears, I bleed the whole system just from a maintenance point of view. Haynes say to "Bleed the brakes" so not helpful.

I would think you only need to do the ones your working on from my theory as the brakes are dual circuit, I.E independent circuits for front and back so I should think it can only effect that circuit, but I am not sure.

As for the order do it furthest away from the master cylinder and work your way in (I.E rear nearside, rear offside, front nearside, front offside)

With the rears turn the ignition ON to pos 1 and then have someone press the brake pedal (Don't use a one man bleed kit on the rears)

Fronts are done in the usual manor.

Martin