Yes, there is inbuilt library of navigation buttons so you can choose navigation button of your choice from Navigation button Library from admin side.
Avaratan Slider Lite version providing 6 default loaders under “Loader” Panel. You can upload your loaders with pro version of plugin.
You can only duplicate your slider elements. If you want to duplicate your whole slider then you have to purchase pro version of slider.
Yes, you can reach with this functionality via adding a links on slider elements.