Need advice on lens combination with D800

Hi,

I can not make up my mind, therefore coming to fish some opinions and advice.

I have a D800 with following lenses:

1) 50mm f1.4 Nikkor D, Bokeh is busy, nothing compared to the 85.

2) 85mm f1.4 Nikkor D, love the Bokeh

3) Nikon 24-85 3.5-4.5 VR, not bad for the money but I feel something is missing...

4) Nikon 80-400 4-5.6 got it for years now, do not often use it but why sell such good glass ?

Also a DX Sigma 8-16 that I will probably sell.

The type of work I do is mainly Portrait but I must say that with D800's resolution I am attracted to landscape again.  The resolution is so high that I use a lot my 50 & 85 and do not mind cropping just like I did using B&W film in the old days.

Here is my question.

1) Should I buy the Sigma 35 mm f1.4 which seems fantastic in order to have this wider lens for group pictures, getting the mood and action in a room as the 50 mm is sometimes just too tight.  I also look forward to its Bokeh which apparently rivals the Nikoor 85 f1.4 ?

2) or sell the 24-85, 85, 50 for what it is now worth and get a Nikkor 24-70 f2.8 ?

Something tells me that it will not be a good choice because of its weight and the fact that it will still be a compromise not replacing the primes. But I hear so many positive comments on this lens that I would appreciate feedback from people who own it and can share their opinions.

Thanks.