little bit on item 2, the CPU cores: unboosted projects have a CPU quota set up with the kernel. that throttles your processes to ~1/4 of one CPU core’s worth of CPU time. I think boosted projects have higher quota, so that they can run faster. but I haven’t heard of boosted projects having access to actually better or more CPU cores.
I am questioning it since I wanna make sure that I scale incase if my website grows more, I don’t like traditional hosting providers since they look complicated and offer way too many services that I can’t wrap my head around.
I don’t know personally, but it probably won’t let you write to those files anymore, giving you an OutOfDiskSpace error as usual when you run out of space - however it could be that your project will simply be shut down (you’d likely have to email support if that happens).