Gunite was shot months ago and we just had concrete decking poured. Won’t plaster pool until the Spring. Now that the decking is poured, we realize the step down from deck to first step before Baja shelf is too deep. We haven’t told pool co yet, but we’d like them to add Gunite to this step to make it higher and also increase the surface area (you can barely fit 2 feet on the step before you step down to Baja shelf). How complex is this change?