> and a MacBook Pro for PowerPoint and other stuff (e.g. Adobe products) that don't work well (or at all) in Linux

Give OneDrive and PowerPoint Online a try! I use it for lectures, it works pretty well.

Now if only I could figure out how to get HDMI output working when I'm on my Linux partition...

I wish they would cave and offer a $5 plan for 100gb.

They never will though, it messes with the economics of the business too much as everyone would immediately trade away from the $10 plan.