Coffee table top with miters??

I have attached a picture of a coffee table I am trying to recreate for a client I have done the metal work on the legs (which was far more invloved than it looks) and have also bid the wood top and shelf. I have yet to find out if I have won the bid or not. The top is supposed to look like a solid slab (of curly maple) The one in the picture is yellow pine flooring and it appears as though the builder did a rabbet for the sides to fit into. Kind of ruins the illusion of a slab. I think she’s leaning towards a miter. I worry about it opening up and my ability to get a nice joint. I have a unisaw a cheap biscuit jointer and pocket hole capability. Any thoughts and tips besides praying I don’t get the bid?? It is 28” wide I will be able to book match wood to about 18-20” how difficult will it be to get a good grain match/look Travis