e0cef07e66014ebf I honestly don't know whether it'll make a difference. That partly depends on when you'd be buying—whether it's during a sale week (e.g. Black Friday week) or if not, whether I can find something on sale from its usual £350-400 price tag. That's how much the next tier up would cost at a minimum. You can see that the regular price of the laptop I linked is £300, and it's about the same as the best options you'd usually see in the £300 range.
The one caveat is that if you want or need more storage, then yes, it would be best to save up, as I'd expect to be able to find an equivalent laptop with a 256 GB drive instead of 128.
On the other hand, depending on how long it would take you to save the extra money, you might prefer to buy now and be able to start playing right away. It's really your call.
I'm always around, so I'd be able to help you pick something out whenever you came back. But I can't predict what I'd be able to find for you beyond what I'd said above because the market can change a lot even in a few weeks.