You may be able to find what you want in RSF. Other areas to consider are Northeastern Poway, parts of Escondido, Bonsall, Fallbrook, Valley Center, Jamul, Alpine.
It depends on what you want from the house. If you want an upscale estate in a prestigious area not far from civilization (like RSF but cheaper), Poway would be the best choice. If you want a ranch house with lots of land to grow avocados and keep horses and you don’t have to worry about commuting to work, that could be had in Fallbrook or Alpine for a fraction of what you’re willing to spend.