I am interested to see your choice of camera, i have the same model to take out , using the kit 18-55 nikkor lens. I also have D300 which I use for most of my indoor shots, but it feels like a tank compared to the D5300.
I use a very old nikkor 60mm f2.8 macro a lot, I reckon I have had it for 40 years now , but I need somthing longer for attempts to capture insects - especially if I try to use Stackshot - but the price of the long Nikon macro ( is it 180 mm and about US$ 1500 ?) rather frightens me ! I see a lot of recommendations for a similar Tamron at about half that price, but even that seems a vry great deal.....
But I suppose I shall have to do something when the warmer weather comes - not many insects to be seen at Xmas in UK .