Welcome SFTWend

and what a fine looking GTI that is

Best advice I’d give having run DSG mk8’s and now an 8.5 for damn near 5 years (Tempus fugit) is leave everything in factory settings. Leave auto hold on as it’s seamless and both you and the vehicle will learn each other. And leave the gear nugget alone when sat at traffic lights. It’s all electronic and if the auto hold engages it’ll stop pulling and power down in stop start mode quite promptly.
As for tyre pressures, I’d say drop them a bit from factory recommended to improve both comfort and tyre wear but it’ll take a bit of experimentation both front and rear.