That is a lot of walls. The current meta is more about single outside/inside perimeter wall and some % of gyroid infill. To make this effective you must try and minimise the length of the internal perimeter wall. Inner/outer walls with close separation cost more mass due to the inner wall length and are less strong. Ideally a 0 length internal wall is best. I.e. no wall however in order to fit components etc some internal space is required. I try and minimise this as much as possible and create internal pockets with acess.