wat kinda photos are u into and just curious to know how come kit lens not long enuff as of wat u said u wan take people right isnt 18-135mm enuff?
D800 | D700|16mm f2.8D|35 f1.4G|50 f1.8G|60mm F2.8D|85mm f1.4G|16-35 f4G|70-200 f2.8 VR2| SB900
70-300VR is good and sufficient for general use la..
$500 is not much. consider saving up further too...
70-300VR is good...
as for 70-200.. unless you have a rich dad or comes from a rich family den ok lor.