Flexible gravel/road bike – 38c to 25c – Will I really notice the difference?

I have a gravel/tourer bike that was built for me last year as a new commuter (having used my old hardtail for the preceeding 20 years!).

The spec is: Light Blue Darwin frame -https://www.thelightblue.co.uk/Sport/FMLBDD1K/Darwin-Frame-Set

Wheels – 29″ Halo Vapours – https://www.ison-distribution.com/english/product.php?part=WHHAV9SK – with a dynamo on the front to power lights

Tubeless Schwalbe 38c G-One tyres

Shimano S106 hydro disc brakes

Compact 11 cassette with twin chainrings

I love the bike as I can pretty much take it anywhere without worrying about it. However, I’ve started to do some sportives, the longest of which was 80 miles and I’m considering whether I could improve my setup with a second set of more road-specific wheels which I’d switch out for sportives or other long road rides.

Within my budget this tubeless setup is available:

Wheels – https://www.ison-distribution.com/english/product.php?part=WHHAWDF7K

Tyres – Probably Schwalbe Pro-One 25 Discs and cassette to match the existing

The question is – am I going to see much difference by switching the wheels, tyres and the loss of dynamo etc? It’s not an insignificant amount of money and I want to be sure I’ll be glad to have spent it.