1) Find the most advanced military warship possible. Infiltrate it in any way possible, and release Hand So on board to take over the ship's computer systems. Use said warship to eliminate nearby competition, disable tracking devices and then disappear into space.
2) Descend upon Tarkus and remove or eliminate everyone in Novahome. Steal Novahome and keep it hidden on a remote and barren planet/asteroid. Tarkus is too unsafe a location for my goldmine.
3) Secretly develop the gray goo technology to appeal to the fashion industry. Clothing, makeups made with it, etc and market it as the new thing while also restricting it so only the elites can afford it (since no one else can craft it). Create a similar demand for 'silver galotians' as pets. Hype it and make it the new craze. Ensure that gray goo of one form or another finds its way into the hands of politicians, military leaders, corporate leaders, and financial leaders.
4) Instill hidden programming within the grey goo materials that is activatable and will cause the goo to coalesce and attack/restrain the societal elites and people of power upon command.
5) Utilize skilled strikes of grey goo, mercenaries, AI's both mine and recruited...and subvert/control areas of my choosing. Infiltrate military and corporate databases and R & D facilities to steal top-notch prototypes of weapons, armor, and spaceships.
6) Consolidate Steele Tech to integrate weapons, armor, and starship construction to the materials that Steele Tech acquires as a mining corporation.
7) Ruthlessly subdue my competitors as well as any politicians that attempt to stand in my way.
8) Rule the galaxies from the bridge of my own private and upgraded Death Star command carrier, with waifus aplenty kneeling before me dripping juices from every hole.