check B&H, Adorama and Nikon USA web site for refurbished 70-300 VR. the price sould be around what you would like to pay.
Nikon refurbished equipment is equipment that has been returned under warranty for some reason.
repaired, parts changed and adjusterd by Nikon to new specs and put back on the market as refurbished.
I think, if you are buying lenses they are a great deal, as these are double checked before being sent out, much better than used, and they may be better than new simply because they are tested and adjusted.
the ones that I have seen look brand new and perform flawlessly.
if you have good light the 70-300mm vr will not disapoint and the VR is a must for a lens of this length.
when the light starts to drop, may I suggest the 50mm which works out to be about 75mm a short telephoto.
f1.8 f1.4 depending on your pocket will give you the low light coverage and speed you will need indoors.
D or G really does not matter with the D7000, they are both fast and IQ is fantastic however a search of this site will give you good reviews on the 50mm .
good luck with your quest.