I am getting ready to set the blocks for the oven stand tomorrow and I have questions about the recommended height of the stand for a Pompeii oven. The plans call for four courses of 8" block for a total of 32" to the bottom of the hearth. With a 3 1/2" hearth + 2" FB Board + 2 1/2" Firebrick that puts the floor of the oven at 40". It seems to me that adding another course of block to the stand would make things a lot more user friendly (less bending). I know this is an individual choice but I am wondering if there is a good reason for making the stand shorter? Any thoughts?