I'm no expert on Budwig, but I do recommend it for those who choose oleander. My thoughts would be that the best idea would be to add the other oils instead of use one or more to replace Budwig and to take them apart from the flaxseed/cottage cheese. Two oils I would add are black cumin seed oil and grapeseed oil.
Tony
I honestly do not know the answers to your questions but I will try to find out. I know that one person, a doctor, in my Yahoo group sees pretty well versed on Budwig and he recommends avoiding two anti-oxidants that are oil soluable (alpha-lipoic acid and vitamin E), but I am not sure if adding other oils such as those you mentioned would be advisable or not. I suppose you could always take an extra round of cottage cheese apart from the flaxseed and add other oils then, but again I am guessing. I will let you know if I find out more.
Tony