Bitcoin for Boat Yard

My family owns a boat yard. Sell boats, motors, parts, perform service, dockage and storage. Would like to put a “Accepts Bitcoin” in the window. Ideally, at the point of sale I’d like to be able to pick the percentage to be retained in USD and BTC. I guess I could take other cryptos to have an immediate 100% conversion but have zero desire to hold any shitcoins. I’d want to start maintaining % of BTC on balance sheet. What’s the best provider to do this with and what is the easiest provider to do this with (maybe both questions aren’t the same answer).

Thanks Y’all!