Force Sensitive Archive

Can somebody clear this up please? It's very confusing.

1. What are the current recommended 6FS linesto take which would benefit a Jedi?

2. Is Melee Speed any good if I plan to master LS?

3. Does Range Accuracy affect LS throw? And if yes, is it of usefor MLS?

4. What about the crafting related FS lines? Are they really useful for a Jedi considering LS do not decay?

Thank you!