Are all of the 13" macbook air upgrades worth it?

[FYI: I'm an 18 year old female going to college next year]

In regards to the 13" macbook air, I definitely need more than 256GB of flash storage but I have 2 options:
1. pay $270 (with my education discount) more for 512GB of flash storage
OR
2. use the SD card slot as [mostly] permanent storage (with a mini drive so it doesn't stick out of the laptop) which will only give me 64GB more unless they come out with a 128GB microSD card

Which would you recommend? (I have used 170GB of mechanical hard drive storage in my current laptop)

Also, are the processor and RAM upgrades ($90 each with education discount) worth it/do they make a difference? Or should I just save my money?

Realistically, I would love to get all 3 but I'm not sure if I want to pay so much money for something that won't make that much of a difference

Any feedback/personal experience is greatly appreciated! :)

Mac

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