You may want to look into the Downtime Rules from Ultimate Campaign. They will allow your character to open and run a Brothel or other business.
Dance halls used to be listed as brothels, prior to errata, so we'll use that as a starting point.
You can outright buy a basic brothel for 2,150gp, or you can create your own by first earning 53 Goods, 1 Influence, and 53 Labor (which will still cost you 1,125gp).
That's for a basic brothel that includes 1 Greeting Area (ball room), 1 Bar, 1 Common Room, 1 Lavatory, 1 Office, 1 Sitting Room, and 1 Storage. You may make yours very different and/or much larger than the base model.
I hope that helps!