Since it is a B2B solution - don’t try too much seo, marketing, etc whatever else founders use
Can you expand on your second point please? "don’t try too much seo, marketing, etc whatever else founders use"
What you need is to talk to a few people and then to iterate. Since you are still early, the goal is to get them to validate you are solving a problem, by showing. They don't need to use it, but if they ask to, then great, you are on to something. Make sure you have something hands on people can try without talking to you as well, and also make it very easy for them to send feedback and report bugs.