Update: I ended up replacing the battery in the Razer Blade for the sixth time and this one seems to be delivering longer battery life than others before it. Got a refund from the last battery seller as well, so basically came out even.
So buying a new one isn't really as pressing, as the 6th gen i7 and 16 gb of RAM is still up to the task and then some.
I also used Stud.io for the first time a couple weeks ago and that's more or less convinced me I should get a Windows or Mac laptop rather than a Chromebook.
Thanks for your help, everyone!