I am currently in the planning stage for a new guitar I am going to build, and I have a few questions for someone with a bit more experience in this field.

1) Where is the best place to order an Original Floyd Rose, or an Ibanez Edge Pro/ZR? What would be a good price for these trems? Which would you recommend?

2) Would it be overly difficult for me to install the trem on the guitar myself, or should I take it somewhere to be installed?

3) Where is a good place to get templates for different guitar bodies and cavities for
free or for a reasonable price?
Thanks in advance