Here’s a look at the legs placed on the top. So this is a rough idea of what they will look like upside down.
The coffee table has the one “rough” piece that needs to be added as a brace for the underside.
Here’s the glueup of the coffee table. I think there’s 18 clamps on there:
Here’s a look at the strengthened on the underside of the coffee table top - these will be hidden unless you lean way down and look inside. Screw holes are slots to allow the wood to shrink and move. Legs will be fastened with slots as well, for the same reason.