PvP Gear: Yes. It's pretty much all glamour unless you bother with the Wolves' Den, because the PvP that people bother with (Frontlines) is item level synced.
Cast abilities at focus target: If you macro it, yes. Otherwise, you have to select it. To use a specific skill on a focus target, the macro line would be "/ac "Skill Name" <f>"
Special macros: Mouseover is <mo>. It will not target the enemy if placed at the end of the /ac line (for example, /ac "Skill Name" <mo>) but will simply cast it on the enemy without targetting them. [Here] is a useful guide for macros.