Realistically I'd be unlikely to be forking out for an A9 just now anyway, maybe in the summer when I'm more flush!
A used A7 and 35mm f2.8 is unlikely to set me back much more than £1000 all in, but I am quite tempted by the prices of new grey bodies actually.
This! An a7rii will be around the 2300 quid mark at launch for body only. That's a huge leap in price. Seems people keep forgetting new models cost a fortune.