Home based FFL IOI question

I just sent off my FFL type 7 application. I was able to include my zoning verification letter from my city stating that this activity is permitted at my residence.

My question is about the IOI interview. Do I need to have all of my equipment purchased? I imagine they understand that I’m not going to spend thousands of dollars on equipment before approval.

I have my secure area, office set up, bound book, etc. any other tips?