Getting new camera (610) and I need some lens advice.

So it looks like i'll be getting a d610! Super excited to upgrade to it from my d5300. Only problem is lenses. I have 3 DX and only 1 FX, a 50mm 1.8. So since i'm going to a FX D610, i'll need some new lenses! Can anyone suggest some good or "essential" FX lenses? I was thinking about going with the 70-200mm f/4. I primarily shoot animals, birds, some portraits here and there, and a good amount of landscapes. I can comfortably buy a lens up to around $1700.

Thanks!