Large Irrigation design needed.

I need someone to produce an irrigation design for a contract of ours. I have the landscape plan that will show you all the planting areas, trees, pavement etc. I can give you the water meter pressure and size. From there you will need to design a system mainly using hunter industries parts. The system will need to have a RPZ device. The system main line should be looped. Sleeving twice the diameter of piping needs to be installed and shown between pavement. This project is in Texas and will need you to design the system according to their standards. This is an apartment complex so an efficient and cost conscious design is needed. Drip must be in all the beds. any area 48" wide or less need to be drip; All trees will have bubblers. Rotor or spray heads will be as the designer see's fit.