I'll be attending a course where we would frequently use the COS, as well as this other reference:
DOBBS-ALSOPP, F.W. et al. (eds.), Hebrew Inscriptions (New Haven – London 2005).
The COS is already available as an Accordance module, but I don't think this other one is. However, there is a product called "Inscriptions Hebrew, Index, and DEH". Could this module set be a 'substitute' for this Dobbs-Alsopp volume?