Save yourself a lot of time and money. Pull up your property on Google Maps, and use the distance tool that is included with these maps to take your measurements for each area.
You should be able to do this without stepping out on the property and walking it.
Further you don't necessarily have to divide a single type of plant (grass vs tree vs shrub) into multiple zones just because they are in different areas of your property.
The main thing is to divide your property up by the type of plant which determines its watering needs. You might be able to run 2 or 3 separated areas of shrubs on the same "zone" or valve, despite their being in different areas.
The general rule is to determine the main types of watering needs (trees, shrubs, grass), and then use calculate the flow rates needed to cover these 3 types of plants, which in turn will be dependent upon what precipitation rate spray heads or drip tubing you select. If you use low precipitation rate emitters and spray heads, you can cover a much larger area of plants with fewer "zones" or valves.
From the above picture, it is likely the lawn areas can be handled by 2 zones (one for the sunny area, and the other for the area that is partial sun). All of the trees are likely to have about the same watering needs. It may be possible to place ALL of the trees on orchard style spinner emitters that have a low precipitation rate, and hence many trees can be run off a single 3/4 valve. I would estimate you could possible handles all the trees with 2 3/4 valves. Another irrigation method that might also work for the trees is commercial grade drip tubing, such as made by Netafim. You can run about 800 feet of this tubing on a single 3/4" valve. Whether you use Netafim drip tubing or orchard style spinner emitters (which have a throw of up to about 30 feet), depends upon how clear the area beneath the trees are. If it is fairly free, the spinners will work well, If it has significant areas of "brush", then the drip tubing might be better. Both methods of tree watering will provide a low maintenance system 10-15 years. The spinner system has the advantage that tree fertilizers are easy to apply with a spinner system vs a drip tubing system. For the shrubs close the house, the Netafim tubing is an excellent solution. The entire plantar areas around the house can be handled probably by a single 3/4" valve if Netafim type tubing is used.