Normally countertops with laminate on the edges have the edges done first, then trimmed flush with top and bottom edges of the top, then the laminate installed on the top and trimmed flush with the edges. This hides the edges and makes it less likely to hook the edge and rip it loose or break a chunk off. You commonly see this where two edges meet at a corner. Someone walks by and hooks their clothing on the corner and off comes a piece of laminate. Having the edge exposed at the top side will be even worse.
If you want to lam the top first then I strongly recommend that you glue a wooden edge on after instead.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.