How can I leverage a powerful political contact’s startup for my own growth?

I am working for a national-level politician in my country who held a minister of state position but recently he lost in the elections, I am just a small web designer here working on salary. Typically, politicians in such positions generate a lot of wealth during their time in office, often enough to sustain generational wealth and likewise he does own many businesses. Now, without government power, it seems like he’s starting to think about his future and has decided to launch a chemical company which he’s branding with his own initials—signaling that this venture is expected to be his biggest yet.

Since my political work has slowed down, a person who is overseeing the startup of this chemical company has approached me to handle the branding and has invited me to work in their lavish office located in a nearby city. I had been in the process of establishing my own digital marketing agency due to lot of Freelance work, but I see a lot of potential in this opportunity.

Given the politician’s considerable wealth, influence, and extensive network, I believe that his business is very likely to succeed. Even when smaller business owners start ventures, they have the potential to grow quickly with the right contacts. With someone this high-profile, the chances of success seem even higher. If I become part of the company from the very beginning, I feel like I could grow alongside it, possibly into a key role.

Of course, I still intend to create my own digital marketing firm, but I want to make the most of this opportunity. Since I don’t have to climb any corporate ladder and am joining at the startup phase with minimal employees, I’d like to know how I can maximize my potential within this company. How can I leverage this opportunity for my own professional growth while also balancing it with my plans to launch my digital marketing agency?