System Integrator- What level do we qualify for?

We are looking at a potential membership in the SBC.  We are a system integrator who installs RF solutions, 9-1-1 telephone and console equipment. In addition, we also install BDA/DAS units for both public safety radio and general LMR systems for both commercial and government agencies.    We are a shop consisting of ~10 RF techs however we have ~35 total people including Admin, Management and Project Management.  What category would we fall into for membership and what would that cost be?   Thank You