If you have the extra space, you should remove every addon from my BIS Addon folders, place them (with their readmes and example missions) into their own separate folders outside of the OFP directory inside of another folder that you have titled OFP ADDONS(or something like that), Then load them one by one into a mod folder (NEVER use the BIS Addon folder). Just copy the pbo's you need for your current mission (not your entire archive).
Sometimes, certain addons clash with one another due to similar global variables, so be careful of what you combine too. I always store my downloaded content separate and then copy what I need to beta test or build into a custom mod folder, deleting it after I'm done testing or building.