I should have mentioned the reason I do the lay up that way is that to get into the compound curves the cloth needs to be soft and the resin softens the cloth ,The following layers are 300gram unidirectional which is quite thick and it takes a few minutes for the resin to soak through if you were to put all the layers into the mold and try to wet it out you would get sick of trying and lose the plot before resin even got through to the mold.Also I find it easier to control the resin content by doing one layer at a time as you can tell when each layer is wetted out .
Terry