buy the same juice at omg, and mix them. i generally drip at 3mg, but six really shouldnt be killing you. like the post above says, airflow? and how familiar are you with subohm vaping? battery safety and what have you.
check out my vapez in Arlington, i haven't been to it but I've been to their store in Herndon. Arlington is a bit far for me to travel from Manassas, especially now that we've got like 3 stores opened here.