=> Robotic cleaners can work well if not overloaded with leaves and stuff. That means they are fine in the Southwest, OK in screened pools in s. Florida, but not so good here in Chattanooga or in Louisiana, where pools tend to be surrounded by vegetation and churned by thunderstorms.

=> All reliable pressure side cleaners I know of, require a dedicated pool return line. If you've got that, you're good to go. If not, not so much. Without seeing your piping, I can't be sure, but normally it should be possible to convert a dedicated suction line to a dedicated pressure line.