So we are in the build process and they just laid all the rebar down, 3.5-5.6-3.5 rectangular pool. However, there seems to be more 5.6 than anything which I think for being a party pool is too deep for the average person. The slope seems like its starts early on each side and so we are thinking we want to make it a 4.5 pool instead. What is the best way to reduce the depth? cut rebar out and add gravel and then lay rebar back down and tie, then shoot with Gunite? Or shoot with Gunite , then add cement? I just want it done right and have the least amount of possibility for cracks or problems. It is 48 ft long which includes a 7" sun shelf. Thanks