Looking to get into the Instagram business.

I have two accounts open. One is a spiritualist account and the second is a luxury posts account. They both have about 3,000 followers -ish each.

I'm looking at buying an Instagram account with 20.k+ followers, feeling this will be a good business move and I can start advertising immediately and making an income off promos and advertisement.

I'm not sure if I should focus on all three accounts or focus on one at the moment. I'm torn between a personal page and my other two account ideas. I don't know where to begin. I'm not even sure if buying the account is a good idea, but I feel good about it. Should I look into buying followers? I understand they aren't active, but in this business, it really seems like a numbers game. I feel I won't be noticed / taken seriously until I have 10.k+ followers. Perhaps once I get to that number, then I'll start building an active, real audience.

Basically, I don't know where to start. But I see the potential. Reddit, give me some advice please?