Factions PvP Pack Questions

I have just recently come back to Guild Wars after more than a year and a half break from the game. A few of my friends and I have decided to come back and give the PvP a shot again. I have been around since the 3rd beta event so I am fairly familiar with the basics of the game, but I did have a few questions. I am planning to purchase Factions simply because the two added professions look intriguing to me, however, I more or less want it for the unlocked skills for PvP which led me to look into the PvP Pack that can be purchased online for $40. This brings me to my first question: The skills that it unlocks...what are they specifically? Everything from Prophecies as well or just Factions?

Does the PvP pack unlock the two professions Ritualist and Assassin?

Am I correct in assuming that I would be paying the $40 so I don't have to do any of the work leveling characters to unlock vital PvP skills? Would I be better off paying $50 and taking the time to learn the ins-and-outs of the class I choose to level and just unlocking the skills that way?

Thanks for any help you can provide!

There's a seperate pvp pack to be purchased for each campaign-unlocks all skill for it's respective campaign.
Pretty sure it gives sins/rits. If you don't want to play any PvE for the sake of PvE; go ahead and by the PuP.