KM7

Hi, Been trading around 6 months, keen to apply for FCA asap, wondering if anyone could help answer a few questions. I believe Limited Permission is the way to go but the application fee is £100 for under 50k of consumer credit, £500 for over. Is this 50k annually? And this is 50k sold in credit NOT profit made? Also are there any restrictions on how long you have been trading? Unsure if you had to provide a years worth of books etc? Any other tips / advice / "idiots guide to" would be great as looking to apply myself to save on costs! Thanks!