You may also get fire inspections at a commercial location. Make sure you never have the exits blocked, merchandise is kept away from the ceiling and that your fire extinguisher is up to date. Get rid of extension cords. Get additional outlets added if needed or replace cords that are too short with ones that reach.
Also, you’re place was probably originally built with an ADA/handicapped bathroom, Don’t mess with.
You need to call a broker. Ask whoever does your car or homeowners/renters insurance to recommend someone if you can. Brokers represent multiple companies and there is usually one who will work with you. You might have to give up on some things you want, like contents or theft if it’s a tough risk to get covered.