It's always worth evaporating before freezing. When you can give the naphtha a good blow and it starts to cloud up, then your solvent is well saturated with DMT and it's a good time to freeze.

I would leave a total evaporation to the end, till you've freeze precipitated as much as possible. What is left depends on how much you have precipitated out, and on the quality of your naphtha. Before carrying out an extraction it is wise to perform an evaporation test on your naphtha, by allowing it to to evaporate and checking to see if there's any residue left.

A far as taking DMT orally, there are a few options. I would personally choose Ayahuasca, using Caapi and Psychotria Viridis (or Chaliponga) though there are other options. This method has been used for thousands of years. There are also options of several plants to add to the brew.

Some people choose to replace Caapi with another MAOI such as Syrian Rue. Further deviation from the traditional method comes in the form of Mimosahuasca and Pharmahuasca. All the information required can be found within the Nexus.

Whichever method you use; an MAOI is utilised to make DMT orally active. If you are currently on a course of SSRIs or SNRIs you must not take MAOIs, until you have stopped taking MAOIs for at least six weeks, but it's probably better to wait even longer. Mixing the two can lead to coma or death, so it must never be done.

Sounds like you're off to a good start, so I wish you well with your extraction. If ever you get stuck, the Nexus is here to guide and help.

Peace

Macre