3. When we go live we plan to use 6 to 8 confirmations and use estimatesmartfee to calculate the fee. We are still researching the best practices. If you have any advice on this it would be greatly appreciated. We also plan to take a percentage on every transaction (maybe 1% to 5%). We will add an informational page explaining this all.
Is there any reason why you set it that high? To prevent double-spending or something else? I second the suggestion to lower it since you don't use a second layer or something similar. I pay with crypto on many platforms and most of them are fine with 1 confirmation. As a buyer, waiting for 1 confirmation is long enough and sometimes can be tiring to do. If I need to wait for 6 confirmations before my order is accepted, I won't ever use your platform at all.