What will you be shooting most of the time?
i am coming from D800 + sigma 35 1.4 + 16-35..
now having A7 35f2.8, I love the bokeh of 1.4 that why add Nikon 50f1.2 but still prefer the 35 focal range...
for the wide side probably wait for fe 16-35f4 or cv 12f5.6 .
if i buy 21 f1.8 can probably cover the wide side but not sure how good is the lens bokeh...