You try can Linux out without installing it(via live USB)? Check this guide but use Kubuntu instead of Ubuntu. You can also try it out via virtual machine.
Also try to switch to cross platform open source programs like these so you'll be able to use the same programs when you switch to Linux
LXQt is even lighter weight while still being fully customizable
Is it easily customizable?
Joe's Window Manager is even lighter weight than LXQt while still being fully customizable
spoiler
it's the window manager for Puppy Linux, the famous fits-on-a-dvd linux distro, but there is no real need to use it as who's daily driver computer nowadays is from 2002?