Is not a bad idea. This strategy worked for me few years ago (2017-2018) but in a different way. I made the discount directly on the price, not a "cash back".

I informed all my clients with a letter saying: From now on I will start accepting Bitcoin and gradually drop the use of fiat payments. You could get free courses and support from me if you want to start acquiring BTC and/or accepting it for your business.

60% of my clients in few months they started acquiring BTC just as company reserves and slowly start paying me and other employees from those reserves. The rest they just didn't want to use BTC and after 1 year I stopped working with them.

Yes, are hard decisions but we have to go forward not backward to fiat money. Some people would say that is a suicide to stop accepting fiat. Yes, in some cases could be, but sometimes you have to take drastic measures, otherwise we will keep swimming in this shity mud of fiat.

You can also use gradually Bitwage.com, so you could still be paid by fiat maxis but you receive BTC, straight away, without even need of a bank account.

All depends of your level of bitcoin maximalism.