"There was no ACNH, good"
This is good and bad. That game is awful but Nintendo isn't doing anything anymore to save it. They haven't updated it in months.
Just buy a ds/lite for a gba, most gba models are crap unless you wanna go through the whole shebang and mod them (IPS screen, better battery life, headphone jacks, etc).
A Wii U invalidates a gamecube unless you want to collect.
Better make sure that you can mod that ps4 you are thinking of...
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi