This is a pretty embarrassing discussion for a psychiatry board... this is basic medicine that I make sure all my med students have down
1) If your patient is in EtOH and has seizure, you have FAILED as a doctor. See below. Also, you need to consider other things in the differential (separate seizure disorder, concominant benzo withdrawal that doesn't have a predictable course- need history bc Klonopin doesn't show up on most UDSs, surreptitious psychostimulant use, etc etc etc... and then lots of things before you call tox and they dx serotonin syndrome and tell you to Rx cyproheptadine- have seen this done erroneously)
2) There is a bulk of literature showing symptom trigger protocols (eg, CIWA) result in faster detoxes with lower amounts of benzos used. The CAVEAT is that the scales need to be closely monitored by trained nurses who know what they are doing. This is not the case for most floor nurses (they tried to implement it in my hospital- huge 1000+ bed mega academic center, and it has thus far been a disaster).
3) For the reasons above, scheduled tapers (pick your intermediate/long acting benzo if LFTs are ok; if not use ativan) with PRNs available are simplest the way to go.
4) There is absolutely no reason to use anything besides a benzodiazpine in 95% of cases (eg they are getting methadone for whatever reason, detox unit loses controlled substance license, etc). Some psychiatrists try to act cute and "fringe" with phenobarb, Depakote, Gabapentin, Tegretol, etc, but there really is no need, and the literature strongly supports benzos. Your job is to safely detox the patient, not brag about how you can practice cowboy medicine (happens all the time btw).
5) If you can't stabilize vital signs, etc with PO benzos, and assuming the patient doesn't have absorption problems, he or she needs to go to the unit for an ativan ggt, phenobarb/pentobarb (given by an ICU dr who knows how to dose it), precedex augmentation, etc.