These are all things you have outlined already
(here's a list of 15ish questions...most multiple choice - can cut some if needed)
What type of ___ are you? (figure out the niche they are in)
How many employees are on your team?
What is your current monthly revenue...just ballpark
How are you currently doing {activity - {thing you help with}}
How much time per week do you spend doing {activity you help with}