Sounds a bit too moist in my opinion. If the relative humidity constantly exceeds 60-70%, hatchoing rate in fday gecko eggs can drop significantly. Also I do not recommend vermiculite for day gecko eggs-especialy if this is fine grained stuff. Geckos immediately shed after hatching. Vermiculite grains stick to the moist skin and are eaten together with the skin. This can result in blocked guts...babies never eat and die within a few weeks.