I've been lurking for years trying to pick-up knowledge and now I ask for help in pointing out potential problems with a renovation. First off this is all volunteer work for my church that bought an empty lot behind our property and built on a couple of acres leaving 8 more. After several years of neglect and desert scrub trying to take over we came up with money to renovate 7 acres with 3.5 turf, 1.5 landscaped, 2 water retention / drainage and 1 acre of turf not to be disturbed. After the mass x work we ended up with the 1 acre of turf getting 18" of dirt placed on it. Not wishing to have rotors sitting on 2 to 3 foot risers, I figure this is a good time to renovate. Before I get blasted about being cheap, again volunteer work, non-profit and this will go to our landscape contractor if we don't go over budget on the many dollars already being spent. This is the plan B if the money is all gone and trying to avoid throwing gravel on it. The first was the original condition and the second is the proposed. The curved red line represents a newly installed sidewalk. The corner area is a seperate memorial garden project that is breaking ground soon. All of the area to the east of the sidewalk is the area that took the 18" of dirt. My concerns are pipe sizing. Static psi 65 on a hose bib and rotor psi on existing line of #5 and #7 at 40. Any pointers would be a big help.