Mojave Harem book 3: An age gap MFFF tale

Bennet and the three 22-year-olds, Haley, Ciara, and Ruby, settle into a routine, restoring the wasted desert property back into its 1977 prior glory.
Each night, exhausted, Bennet is encouraged to pick, without guilt or shame, who he'd like to bring to bed. Like Ruby said, there's something different about the place. They'd never done anything like it, themselves.
Opening day comes, and it feels like they thought of everything. Their first customers think they've stumbled into the find of the year.