I would guess that if someone can afford a MacBook air and 4k monitor they can buy a keyboard and mouse pretty easily. Its the best solution, in my opinion, fo

I would guess that if someone can afford a MacBook air and 4k monitor they can buy a keyboard and mouse pretty easily. Its the best solution, in my opinion, for MacBooks since you avoid the touchbar and keyboard variances and stick with consistent tools you can build muscle memory with. There are so many options out there too. OP could also just buy a USB KVM switch (sounds like their familiarity is with Windows) and use the same keyboard/mouse from desktop.