I bought an M2 Macbook Air at the start of this year for uni. I only planned to use it for uni work as I have another 'more powerful' laptop that I use for everything else, but I kinda love the M2 and want to make it my daily driver laptop. Battery lasts for ages, screen is great, it's thin and light, etc. The problem is - as you might guess - I only got the 512GB model and if there's one thing Apple hates, it's people having control over their hardware, so no expandable storage. I can't afford to upgrade the entire laptop, so I need to work with what I have. Here's what I want to use it for:

• Graphic design: Adobe software, high-res images, typefaces, etc.
• Music production: Ableton Live 11 Suite, sample packs, plug-ins, project folders, etc.
• Music library: uncompressed .m4a files because iTunes hates Vorbis 😢, ~80% of my library (I don't have everything downloaded yet) is 25GB.
• Web-browsing: Firefox... this one isn't really relevant but I feel like I should include it for completeness.

Does anyone have any tips to stretch this 512GB as faaaaaar as it can go? I have a 2TB external SSD, but I'm wary of keeping anything important on it because it's small and I don't want to accidentally lose a bunch of stuff. I can spend a bit of money (maybe 30usd) if anyone has a good idea that requires buying something, but I can't spend any ludicrous amounts, I already did that to get the laptop!

I have an external drive (3.5" hdd, SATA) in an enclosure (usb 3) (purchased separately), connected to a thunderbolt dock (OWC) connected alternately to an iMac and a macbook pro. The HDD goes to sleep, and causes problems. Freezes, weird internet access problems, kernel panics.

I have done some research, and can't seem to figure out:

how to know whether it is the drive, enclosure, or computer causing the sleep, although, fiddling with various settings on the mac seemed to have no effect, although it may have increased my battery usage :(

how to adjust settings on the drive, or in the enclosure.

How to determine what the sleep behavior of prospective drives will be.

As a workaround, I tried to write a zsh script to touch the drive ever few seconds. This kinda worked, but was a struggle to figure out appropriate permissions issues and how to make it run automatically.

I welcome all guidance, pointers to resources, clarifications, incantations, well-wishes.

Long story short--I don't want to connect my mac to my iCloud account, but every time I login to my laptop, I get three popups in a row that say "This Mac Can't connect to iCloud because of a problem with [my email] ...".

I can't find a setting that allows me to disable this, and online searches have been fruitless.