Tell the boss you can get rid of the four programmers by using a new super AI scripting system that only you can program. Tell him with the money he saves on the four salaries, he can pay three of those salaries to you on top of your normal one, and he's still going to save money! Win-Win! Next, you need to gain access to your Windows boxes without a gui: Simply install a Russian botnet, with a web based control interface. You can get an old one from any online Mafia surplus store. Next, you can simulate the AI system using a dozen cheap Indian IT professionals who simply do the needful overnight via the web interface. Demonsrate the system to the boss, claiming it's a natural language interface (don't mention the Indians). Make sure you finish the demo with a difficult task which is written in incomprehensible New Zealander slang, to show that the system still has just a few bugs left. When the boss is impressed, ask for another $500k to develop the system, promising joint marketing rights when it's finished. When difficulties arise in the next 6 months, ignore them, claiming you have coding to do and the final version will solve everything. At some point you will get fired. Use the golden parachute you negotiated after 3 months, when you were claiming that Google have been pestering you with job offers twice each day (proved using forged emails).
Now relax, count your money on the beach in Acapulco, and install an experimental version of Arch Linux on your Beowulf cluster of Raspberry Pi's. Log onto the Internets using your satellite phone, and help newbies with their sysadmin questions long into the sunset.