Yes thats a good knot.
Thats a good way to present the teaser. Do not tie the dropper loop too small. Some times when I am not getting hit I will take off the teaser leader and loop the teaser right off the dropper loop (when no blue present). It provides less visual 'mess'. Sometimes it works.
Another tip is to tie the teaser to your short teaser leader using a Loop Knot instead of a clinch or something. This allows the teaser 'dangle' and therefore to swim striaght instead of being 'dragged' along. Its often the little things