Torching kanthal wire removes a lot of the "springiness" and allows for tighter coil wraps.....
Torching the coil - after winding - can help compress turns that may have spread during the build...
Personally, I torch ~12" of kanthal with a butane lighter PRIOR to winding....I use a home-made jig that keeps the coil wraps really tight, so I don't need to "adjust" after a build....
Re: Peaches & Cream yarn.... it just WORKS!!

You can NOT dry-burn it, like silica, but it wicks great and (at least to MY taste buds) doesn't impart a "flavor" of its own...I do NOT boil it --- some do, some don't --- and have never had problems (I use the pure WHITE variety)....
Happy (vaping) Trails!