I'd suggest getting the table nest. I'm finishing my table and will have my large on a paver (or granite if I can find it at the right price) and the table nest. May not need the paver/granite, but it can't hurt plus it'll make cleaning out the ash easier.
Are you getting the point and the flat mixed up? The flat is the leaner portion of the brisket and I believe is used for corned beef and is widely available. If you do have just a point, I wouldn't use the Travis Method as it should be quite good with all the fat it has in it.