I will be having an Accentra 52i installed in a few weeks and the hearth fireplace opening is about three inches higher than the trim that comes with the stove. I was going to have two rows of brick put on the top to reduce the height of the hearth but a masonry guy told me it would be easier to add two rows of bricks on the bottom of the fireplace floor, backfill the fireplace floor with quik-crete cement, effectively raising the hearth floor a few inches to close the gap at the top. He said I could also put down a nice piece of granite, backfill the same way and accomplish the same result. I know what he is saying but will really work? If I did something like this, how far beyond the fireplace opening wall would I have to come out to fully support the stove?