Which ointment base should I use for this ointment with so high concentrations of revulsiva?

These are indeed very high concentrations, which will cause a major melting point lowering of the lipophilic phase of a cream or an ointment. Maybe we find a solution by using a PEG ointment. I would start by adding 40 g of pure PEG 4,000 to see what consistency is achieved. If the result Is not smear, PEG 400 can be added. It will have to be tried some, preferably on a half quantity.