One suggestion: This admonition appears in the Big Green Egg web site:
Caution: DO NOT PLACE AN EGG directly on a wood surface or on or near any combustible surface! The bottom of the ceramic vessel does generate significant heat when in use, and may cause combustion if placed directly on – or in proximity to – any combustible material. The EGG is designed to be used in a metal Nest or with a metal table Nest, providing an air gap below the EGG. Alternately, a concrete paver block may be used to support the EGG when used in a table.
Kamado Joe supplies ceramic feet to put under the kamado when it is resting on a board such as you have done. The bottom gets VERY HOT and can burn the wood. You need to find something that will raise your Vision up about half an inch to allow air to circulate under it, maybe three ceramic supports that you may be able to order from KJ. Or use a concrete paver as suggested by BGE.
By raising your Vision up, you will also be moving the main lower shell away from direct contact with your table top. This is also important.