Here are my picks on edibles you might consider, My guess is Cyrpess is hardiness zone 9a
First those smaller things that you could plant along the fence behind the pool side wall which I think runs roughly north/south so should get full sun about 5 hours per day in the summer months.
1, Sugarcane, you just need to be careful on the variety you pick, some heirloom varieties only grow 6-7 feet tall, others can get up to 15-20 feet. They like full sun, so growth might be stunted a bit in this location. Downside are sharp leaves and some varieties have prickly hairs on the stalks. Sugarcane is a member of the grass family and is grown commercially along the Texas gulf coast to a limited degree (about 1/10th of the amount that is grown in Louisiana or Florida). Sugarcanes are broken down into 3 basic types chewing, syrup, and crystal, although there are many cross overs, for home growing you most likely want chewing canes which have a softer cane and often lower sugar content. These should grow with little or no routine care other than perhaps watering during severe draught, adding fertilizer once per year, due to their rapid growth rate (a 6 inch planting segment can grow 4-5 ft in 3-4 months) they tend to suck the nutrients out of the ground after a couple of years.
2, Bananas you are far enough south that some edible varieties of bananas can grow, fruit and ripen before the first freeze, it is also warm enough there to leave banana plants in the ground year round, although again selection is important. You probably want something like dwarf cavendish, dwarf namwah, California Gold (a Texas variety), Dwarf Brazilian, Ice Cream, etc. Most of these dwarf varieties get to be 7-9 ft tall, but the stems die off after fruiting each year. They grow in clumps that grow more and more new stems each year which you can split and plant elsewhere.
The above would both be fall harvest just before the first freeze
3, Thornless blackberries, there are a number of varieties, but if I had to pick just one for your location I would probably pick Prime-Ark Freedoms this is a recent (2013) release from the University of Arkansas, it is primocane fruiting, but tends to do better in our region as florcane fruit producing (second year canes in the late spring vs first year canes in the fall), in cooler climates it does better with primocane first year fruiting, but our summers tend to be too hot for much primocane fruit production, so in our climate you can expect a heavy berry crop in June, and a much lighter one in September most years. Blackberries need about 1-2 inches of rain equivalent per week in the growing season so will need drip irrigation in dryer growing months. This variety of thornless blackberry will likely nee some support, they tend to having a trailing growth vines the first year, with more erect vines developing in the 2nd or 3rd year after planting. These also take some upkeep as the 2nd year canes will need to be cut out and removed after fruiting. Left untended this variety may reach a height of 7-8 ft, although you get better fruit production if you top them at about 4 ft. then let them grow out to about 5-6 ft.
For the north part of the yard I would suggest citrus, in particular I would suggest Satsuma (Brown Select, Owari, St. Ann Early or Louisiana Early, if you have room I suggest 2 an early where you get fruit around Sept and a regular where you get fruit in late November) These are all cold hardy citrus, they may require active sheltering from hard freeze (covering with a work light or traditional not LED large bulb C7 christmas lights for a heat source ) and watering during draught the first 2-3 years, but once established they should take care of themselves most of the time.
p.s. I just checked and Cypress is zone 8b, the 8b/9a line runs just south of I-10 through Houston