Nathan,
To start, thanks for all of your help on the salt. Your patience with the rookies was greatly appreciated by many of us. I can't imagine having to focus that much on every detail, hour after hour on those hot days like you did. I am also concerned about who will help me with my helmet strap, visor, gloves and all the other dumb rookie things I have done on the line.
Best of luck on the new business. While I am about a zillion miles away, I do have an interest on data acquisition for my bike, so I will probably be in touch down the road.
As for your insurance, have your broker find the cheapest categories for the type of work you anticipate. My guess is that the landlord required "X" dollars of liability coverage. Unless you start doing a lot of customer dyno work, it may be cheaper to insure the business for doing efi installation and data acquisition, or anything else that doesn't sound like it could cause a lot of destruction or potential for harm. That could be less exposure for the carrier and should translate to cheaper rates for you. Tell them your plans are for $10,000 a year in revenues not $500,000, that will also let them know they have less policy exposure. In the future the insurance company will ask for your annual financials and use that to help determine your rates. So start off on a good note by keeping detailed financials. This will help at tax time too as you can now deduct your expenses and depreciate your equipment. I am in healthcare and have had to deal with liability and work comp coverage for years and the broker is key to getting your best coverage and rates.
Ed