RE: feathers-offset/helical/straight
I plan on getting a jig and fletching my own. I am going to get Right Helical because they stabilze the arrow better than offset and straght but it is not necessary in most cases. I also have a Trophy Taker drop away rest.
If you have a drop away and or have trouble stabilizing broad heads go with the helical if not then you could use the others just fine. I like the Right helical better than the Left helical because when shooting at 3D targets your tips can spin loose with left helical.