D5100 with 18-55mm kit + 35mm f/1.8G - what is next?

Hi,

I'm an amateur in photography. I own a D5100 with 18-55mm kit lens which I seldom use and a 35mm f/1.8G which I love very much and almost 90% of my shots which include portraits of my family members (including kids), travel – nature / landscapes (mountain peaks, rivers, sun rise, sun set), historical / architectural monuments, macro (flowers, insects etc.) are taken with this prime.

I don't feel I'm lacking anything on the wider side (for wide/ultra-wide angle shots I stitch multiple photos taken by 35mm). But sometimes I do feel I'm lacking something in the telephoto / portrait end (head-shots are not so good at 35mm). Can you please suggest a lens within $450 which would fill the void?

Some of my choices are  -

Tamron 70-300mm VC

Nikon 70-300mm VR

Nikon 85mm f/1.8G

Thanks,

Ayan