So your keyboard is busted, your floppy drive is busted, your right button (mouse?) is busted...no wonder you're struggling.
I personally wouldn't dream of using a computer that was as crippled as yours, or crippled at all. If you're serious about using it you'll need to either get it fixed, or buy a refurbished one that's all working and re-capped to enable it to work for another 20 odd years.
I honestly would love to help you, we all want to help. The fact is, if you mimic the config of your A600 in WinUAE, then you should be able to setup your CF exactly how you want it with all your hundreds or thousands of games and application software. Download all the games or applications you need in an emulated Workbench...that's what I have done in the past, expanding archives etc to a real Amiga partition (don't expand them from within Windows if you can help it). Then pop it in your A600 and if the CF is partioned correctly with correct filesystem etc it WILL work (providing your Amiga isn't faulty!)
Your keyboard membrane will likely be damaged where it plugs into the motherboard, easy to damage on an A600 due to how the keyboard is mounted - any force on that connector when the keyboard clip hasn't been lifted will severely damage the tracks and its electrical conductive coating. I've revived a couple a few years ago by cutting a small amount off of the end, so that working conductor can make the contact in the keyboard connector socket.
Without your enter key working, how would you expect to enter highscores into games? You'd be left having to reboot. You need a working keyboard, surely to God.
You could go the gotek route, being as though your floppy is busted anyway.
Good luck with it all, stick with WinUAE if you can't get working hardware.