Cross Class Skills questions.

[Boo]

My goal in this game is to make a pure DPS BLM, having the most damages output without caring about any other stats (aside from a little pie to add a bit of mana so that AF moments last longer). My stat ratio is 3:1 int:pie. I've decided to take a look at some cross class skills, as I just recently learned about those (they're pretty damn awesome!) and decided I'd take a look here:

http://www.ffxivguild.com/category/classes/

 

The info there are a bit outdated so I don't know how viable they are, but still a few interesting elements caught my eye:

 

Archer:

Raging Strike - Increases attack power by 20%.

Quelling Strikes - Reduce enmity generated by each attacks

 

Lancer:

Blood for Blood - Increases damage dealt by 20% and damage received by 25%

 

Pugilist:

Internal release: Increase crit rate by 20%

 

There's missing info on arcanist.

 

1)Do all these bonus stack together? Does it stack with Astral Fire?

2)Does raging strike affect magic potency? What about blood for blood?

 

Thanks for the answers!