100 Daedric Arrows:
player.additem 000139c0 100
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For adding yourself to the vampire faction, it depends on how you want to approach it...
The vanilla default vampire faction is:
player.addfac 00027242 1
*which should make enemies out of most friendlies because they detect what faction you're in*
The Volkihar vampire faction from Dawnguard DLC is: (the xx in the faction ID number needs changing to the DLCs load order number, should be 01 if DG is loaded first)
player.addfac xx003376 1
*which should make enemies out of most friendlies because they detect what faction you're in*
The player character vampire faction is for when you've become one according to the games factions, will be an ally to vamps, and friendlies shouldn't attack as long as you don't actually have vampirism:
player.addfac 000c4de0 1
If you're wanting to make just individual vampires (or any other NPC) non-hostile, it's much better to just add each one to the player ally faction:
select them with the console open and enter:
addfac 0005a1a4 1