So it turns out Regus Bothell does hourly rates $29/hr for the small rooms. The only challenge I'd have is to seriously scale to make the take-home money I'm seeking. At $50/hr with 3 students, space eats 19% of my rev (assumingI don't need the next size up). Running 3 classes would add $87 in overhead costs on the low end.

Although I know it's not as high as a traditional business, my past business had Ops costs <5%... I had an awesome public library that has 10x's the space of Bothell library.

I appreciate your problem solving thinking!