working on realistic worlds
The vRAM and RAM may become a limiting factor later on, depending on what you’re doing.
Is my system okay
I’d call it the absolute minimum you can get away with for a new machine. So not that OK for long-term game dev - playing and making games is quite different, and laptops are mostly non-upgradable.
But it’s not like you’re going to exchange the laptop, right? So is the question here to validate the purchase 
?
I’ve been sitting on a 8GB vRAM GPU since 2017. Has it been fine for everything? Yeah!
- would I now buy an 8GB vRAM GPU for gaming? Unlikely.
- for game dev? Absolutely no.
You mileage may vary, ofc. If you browse some of the recent threads, you’ll run into similar opinions:
…and into actual issues where things simply refuse to work.