I echo all the above, I started with the KGC razor and it's a great bit of kit; no need to spend more when dipping your toes, in all honesty it might be all the razor you ever need - YMMV of course.
My first few shaves weren't great I will admit, but with a little practise you can get there - if I can do it, anyone can!
What you will find is that there is no substitute for patience, practice and persistence. If you don't get the results you want at first, there's no shame in cleaning up with your old cartridge razor to start with. If you get stuck, use the forum and YouTube to learn.
I wish I'd made the leap 20 years ago and am so glad I did - welcome aboard!
Ps - don't fall for the hype and feel the need to drop loads of cash on the 'best', find your feet, get the basics down and then if you fancy it, try some other stuff.
Buy a mixed sample pack of razor blades as they're a very personal thing, the only right and wrong can be decided by you. You will likely find what you like to use changes as you get more proficient, so if you hate a blade at first, don't write them off as in a few months, that could be the best blade for your needs.