It was only about 2 weeks ago that I told you about the sad demise of Santa Monica institution Pradeep’s at 1405 Montana Ave. At the time I had heard that a new Mexican restaurant was expected, but I had no details. The wait is over: Paper recently went up in the windows giving us the name of the new eatery. There isn’t much information out there on Prima Baja Cocina, except for a developing website that promises us tacos and a September opening.