Is this plan viable for a move to Spain?

For background, I am a dual US and Mexican national, and I know that citizens of ex-colonies can apply for citizenship after two years of legal residency (though I am aware that the bureaucracy can delay this timeline, as well.) I speak Spanish at a native level. I hold a bachelor’s degree in business administration and I am currently pursuing a dual master’s degree in psychology (specialty in positive psychology) and life coaching. My plan with this master’s degree is to lead workshops and 1:1 coaching on emotional intelligence, habit change, and resilience. My clients would primarily be American.

I also have an online newsletter with hundreds of consistent readers. My ambition is to continue growing the audience. The platform that I use allows for readers to subscribe for a small amount each month as a token of support; essentially, I am an author/psychologist/content creator.

My question is: if I am able to generate consistent income in these areas, would I qualify for the digital nomad visa in Spain? I understand that the minimum monthly income that is required is €2400, along with proof of savings (although I am not sure how much the cushion needs to be). And how many months of steady income is required for proof?

I plan to create an LLC and direct all my income there, of course.

Thank you in advance.