I use a log type vaporizer for my changa, works very well. A log style vape is basically a small ceramic resistor, inside a stainless heating element, enclosed in a wooden cylinder that has an air-path that flows through a small "stem" that you pack your changa into. I like it, and think it works very well for changa. Whip vapes should work fine, I've vaped changa out of them before, and while they are not the best solution in this case, it should work fine.
I use the same temp for changa as cannabis, but this is prob overkill. I'm sure 250-300f would work fine as well for changa. My log vape does not tell me the temp, but perhaps i will experiment with my extreme q some day and find out what temp is best as it has a digital temp display/adjustment. I estimate my log vape to sit at about 365F, but cant be sure without a good thermometer which i don't have. I would think you would want a whip in this case, as a bag could cause more condensation and losses or actives to the increased surface area of the bag.
Good luck, and happy vaping.
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In a society in which nearly everybody is dominated by somebody else's mind or by a disembodied mind, it becomes increasingly difficult to learn the truth about the activities of governments and corporations, about the quality or value of products, or about the health of one's own place and economy.
In such a society, also, our private economies will depend less upon the private ownership of real, usable property, and more upon property that is institutional and abstract, beyond individual control, such as money, insurance policies, certificates of deposit, stocks, etc. And as our private economies become more abstract, the mutual, free helps and pleasures of family and community life will be supplanted by a kind of displaced citizenship and by commerce with impersonal and self-interested suppliers...
The great enemy of freedom is the alignment of political power with wealth. This alignment destroys the commonwealth - that is, the natural wealth of localities and the local economies of household, neighborhood, and community - and so destroys democracy, of which the commonwealth is the foundation and practical means.โ - Wendell Berry