Is your reason for accepting Bitcoin purely to charge more? If you look at BISQ or robosats or any p2p exchange, people pay more for Bitcoin there than KYC exchanges. Even the KYC exchanges charge a smaller premium over spot or a commission fee.

If you look at how much it would cost you to acquire that much Bitcoin, you'd understand why it would make more sense if you were offering a discount if Bitcoin were used. As someone who uses Bitcoin to actually buy things, I can tell you generally speaking discount or not, I'm not enthusiastic to give up my Bitcoin to someone who doesn't want the Bitcoin in the first place and is just going to convert to dollars. I'd rather just give you what you want in the first place which I don't value.

If however, you do value Bitcoin, I feel the need to add you to my network. In other words, you've gained a recurring customer who will market on your behalf.