This pen, although they call it a vaporizer does in fact combust. So does anyone have experience or opinions on it in the use of Changa.
Basically, will it be hot enough to burn the Harmine freebase and passion flower extract as well as the dmt?

In my experience, there is no e-pen that heats up well enough to combust herb/extract of any kind.

I've used many different "pens" and no matter the price you pay, nor the brand you buy, will actually heat your material enough.
Think about this though, if you are using a pen of sorts and it IS "combusting" your product, what happens when the inside of your pen gets caked up with half burnt material and ash?

In my opinion, pens are all bad.

May it be hot enough to burn your Harmaline Freebase?
Possibly
However, how many times will it work correctly before it dies out?

I bought a "Vapor Genie". Everybody says go with the "Glass Vapor Genie" (or GVG), but im very impatient, and therefor decided to look at my local "headshop" where I found the classic Vapor Genie, 60$ spent, well worth it.

Enjoy your travels.