I think you are off to a good start with the 3 skills you bring to the table
1. Business training
2. Musical experience
3. Husbands tech ability
The downside is that you are probably looking at several years before you have learned basic recording principles.
Also this is the absolute worst time in history to open a recording studio.
If you are willing to work your butt off during this bad stretch and learn the skills, then maybe when the recording "tide" turns around, you will be ready to compete.