Hi Mazikowski,
I know it's tempting to use the circuit with the CD4017
because it does it all in one box but if you want a led
bar it's getting rather complicated and you're gonna get
more trouble than you can handle.
Stick to the circuit with the shift register, if you add
a second CD4015 you'll get 16 outputs.
And if you add transistors you can drive as many leds
as you want.
https://www.electro-tech-online.com/attachments/light-chaser-984-gif.13410/
on1aag.