Just a head's up....this weekend you should be getting your plants in the ground. If you want the best selections, get in the garden shops prior to midday on Saturday, when there will be less available. I find it easiest to take photographs of the areas I am working with and then pull the photos up at the garden shops. This will allow you to look at the plants and visually insert them into the areas in which they will go.
This is a fun project. Be sensitive to light needs. If things ask for full sun, don't try to trick them into working out in a lower light area. They will begin to fade and fail just as your guests are arriving. Give your plant lots of TLC from now until your rental period so they will be well-established in your absence.