this is actually done quite frequently and the only thing I would suggest is to shore up the shelves intended for the TV. You may need to cut out an area in the back to accomodate the deep TV, then some others for cords and such.
Make sure that the TV can breath all around the shelving so that it does not get too hot.
Make sure that the unit is not too tipsy when fully loaded, you might need to do as the oven and stove people do to anchor the unit to the wall so it does not tip over.
Other than that, you have a good project going and good luck.