Worth looking up Bupropion in relation to suicide attempts, a 2018 study found it was more popular amongst adolescents attempting suicide than TCAs (could be due to TCAs being prescribed less). Study also found these ingestions were much more likely to result in seizure, emergency admission, and subsequent coding as a 'major outcome'. Other than that propanolol with the benzos, potentially hydro depending on just how much paracetamol is in there and if you feel comfortable extracting it; probably best to avoid tramadol- the seizure threshold with that stuff starts around 350-400mg, so if you were to use it stay under the 400 mark.
Primidone overdose is not very well researched, it seems to be very toxic above 20g though some have survived this dose and recovered. Some studies suggest that despite primidone's major metabolite being phenobarbital, primidone itself actually has the most significant effect on the CNS; to me that spells a potentially very deadly chemical.
