I'd still prefer that to "I both test poorly and struggle to complete a structured, long-term course of action" which is just as likely an interpretation if you

I'd still prefer that to "I both test poorly and struggle to complete a structured, long-term course of action" which is just as likely an interpretation if you left it off. At the end of the day, anything could be bad if viewed with sufficient cynicism, and you can't control how others will interpret what you present, you can only control the information which is presented.