Thanks guys! Sorry for taking so long.
So I went through @azdavidr’s step-by-step instructions (great work, by the way!) and the results were:
Available Water Capacity
0.08 cm/cm
Typical profile
A - 0 to 3 inches: gravelly sandy loam
Bw - 3 to 60 inches: very gravelly sandy loam
Based on that information, would the zoning you recommend be:
Zone 1
Washington Navel Orange (25 gallon) x1
Pygmy Date Palm (30 gallon) x4
Zone 2
Tangerine Beauty Vine (5 gallon) x8
Hibiscus (5 gallon) x4
Jasmine Arabian (5 gallon) x7
Lantana Purple (5 gallon) x5
Regarding the hibiscus, they will be in the shade, so hopefully will survive the summer and my yard is small enough that I should be able to cover them in winter…or take @tmcgahey 's Darwinian approach 
Thanks again guys!