[Brightcolours]

Need advice.

My present setup is Nikon D600 + 24-70mm/f1.8 lens. which I use mainly for travel photography. 

Sell that lens and get rich . 

So you only have a 24-70mm f2.8? Its big and heavy, but covers 24 to 70mm.

I like to change to a lighter and more portable setup wiithout losing the joy of photography.

Then the obvious question will have to be asked... What gives you the joy of photography?

I am considering between Sony a7 & a7R

which lens would you recommend for

1) walkabout and portraits - (will use most of the time)

     i) many have recommended FF55mm/1.8

That is only a standard prime. Not the most ideal focal length for portraits. A 35mm lens is more practical as single walk about lens, a 85mm lens will be nicer for portraits.

     ii) any other choice?

2) UWA lens  (will use 20% of the time)

I don't know of any UWA available for these cameras at the moment,

3) Macro  (hardly use)

You can get some extension tubes (there must be some manufacturer offering them) and use that 55mm for macro stuff.

Prefers E mount

I do not have a fix budget but do not mind 3rd party lens if it value for money

I don't think there are any FE mount 3rd party lenses.

 

I know the D600 is a bit bigger than my 6D, but it is not a HUGE camera though... Would getting the Nikkor 18-35mm VR for UWA, Voigtlander 40mm f2 for walk about (manual focus) and Nikkor 85mm f1.8 for portraits not make a better travel setup than the 24-70mm f2.8 you are using at the moment, already?

 

Like Klaus suggests, APS-C and MFT mirrorless seems to be a better idea than FF mirrorless. The new Funji looks to be a nice camera...

To put it another way, what do you gain from FF over APS-C? FF only really gains you the possibility of more shallow DOF, really. And possibly a higher resolution (so bigger print sizes... But if one does not do very big prints...).