Note that DoDMERB may issue a DQ that an academy may waive. DoDMERB does the first evaluation and issues automatic DQs for any issue found on the list, but the academies review the DQs and may request further information from the candidate/physician to determine waiverability. Also, what is a DQ for one academy/branch of service may not be a DQ for another such as vision correction, flat-feet, color blindness, etc. Even epilepsy may be waived if the candidate has been seizure-free for at least five years without anti-seizure medication.
As for chancing, I will simply post a link to one of my many repetitive responses to service academy chance-me posts. This one may be especially relevant if the candidate dreams of flying (for any branch of service). Our son was appointed to both Army and Navy, but chose Army and is currently about midway through his nine-year commitment. I am happy to answer any specific questions the OP has either on this thread or via DM.