Please note that this camera wont do 4K recording (not that you need this...). ISO seems fast enough (6400 ISO is basically the lowest you would normally want to use). You could consider opting for a 18-135mm lens to give you the option of more zoom at the expense of a very little decrease in lens quality (no mortal will ever see).
If you want to start with a more flexible package, go for the body with a Tamron 16-300mm lens. Not a flawless lens but the best lens to carry around if you only can afford/want to carry a single lens. The professional stuff can follow later. And also get a second battery.
If you have money to spend, go for the Canon EF-S 17-55mm 2.8 IS USM. Top price (about €900-1000) but a beast of a lens (and heavy
).
For more camera chat, please let us know what you intend to do with it (zoom, close up, portrait, macro, outside/inside, landscape, architecture, street etc).