mix it in 1910ml of PEG300
that will give you 50mg/ml
if you use Ora-Sweet, it'll be pretty thick and maybe gunk up the syringe (not for injection)... I always prefer PEG300 over Everclear as it mixes more consistently.
3910ml of PEG300 will give you 25mg/ml (that's a lil over a gallon).
some guys mix it in oil for oral use, but I don't trust the consistency in doses from mg to mg or from the top of the bottle to the bottom.... maybe if you used some Benzyl alcohol or Benzyl benzoate to help suspend it.. but if you did all that, why not just use PEG300?
spend $110 and get yourself a gallon of PEG300.