Honestly I would pass on the CE-1000 or CE-2000 for sub duty, these are in no way related to the CE-4000. ( BCA, PFC )
Google CE 1000 or CE 2000 problems.
Ask your doctor if DIY is right for you. Side effects of DIY may include anxiety, elevated blood pressure, lightheadedness, rapid heartbeat, skeletal muscle flaccidity, euphoria, psychological dependence, insomnia, confusion, blurred vision, impulsivity, uncontrolled or repeated movements.