You won't end up with jungle spice if you do a second acid/base cleanup. The tannins and fats that make jungle spice what it is will be lost when you discard the first lot of xylene.
Instead, do 2 separate extractions. One for jungle and one for crystal. To get your jungle spice, do the first 3 steps then evap the xylene. To get your white fluff, do all the steps you described, except use 4 pulls of naphtha and freeze precip after the final base step (instead of 2 naphtha and 2 xylene)
EDIT: for your white fluff, it's probably better to just use naphtha for your first pulls as well. The DMT will salt out better. Also, add NaCl with your NaOH to help drive the DMT out of the aqueous phase.
EDIT 2: more advice: use 3 separate volumes of HCl on your second acid phase (ie equal volume to your nps three time over). Also, you don't need to leave under base for that long. A longer acid phase (overnight followed by a couple hours at a simmer) and shorter base phase (2-3 hours will suffice) will give comparable results quicker. And you don't necessarily need to do 4 acid boils initially, one big one will do just fine.
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