And you need to be on the Gen Dec. In and out. If for some reason you come in on Gen Dec and they need to commercial you home you're in deep !!!!.
Best is to get a letter of invitation for $75 (many sources, very common) then send it and the application to Visa Express, and get a ten year, unrestricted in and out, 60 day stay business visa. That way you can commercial in and Gen Dec out and vice versa and you'll never have a problem. Costs about $500 but is tax deductible.