Can I ask how many Km you guys already had on your cars when you added springs or whether you felt you drove your cars hard or did any track days?

The H&R Dealer here was surprised there would be problems as he had done far more aggressive installs and had no problems, I've already bought the springs off him just not installed yet, so he didn't need to overly try and lie to me, he was assuring me I'd be fine. But I'm still thinking I might just pull out altogether for now.
I asked about getting some Bilsteins at the same time and he said not to waste my time and to wait until I'd put at least 40,000kms. He said since I only had 10,000km on mine already they'd still be like new and have no issue taking lowered springs.