If you dont feel dry after a PT, you def dont "have" to follow it up with a DT. Do you use an LI? My new love is KCKT - few ingredients, & not too heavy for fine hair. Makes it feel like silk.
Haven't tried any of your stylers so I dont have much input on them, but in general I dislike strong hold, sticky gels. My curl pattern is pretty strong on its own though. Not strong as in super tight, but strong as in stubborn.
Def report back on the gelatin PT. Love that stuff!