DoA = Domain of Anguish (Nightfall Elite Mission, nothing to see here in your case, move along
)
FoW = Fissure of Woe (accessible via Zin Ku Corridor in Factions, 1k for a party to enter)
UW = Underworld (as above)
Ursan is suggested, but not compulsory, for the latter 2 as it's an armor/health buff and damage inducing skill you can get from EotN, most FoW/UW parties running Ursan prefer R6 upward, so you'd have to farm Norn Points (see recent topic here on good places to farm them).
It's a love/hate deal with Ursan, but whatever works, or as someone once said "lolpve".
I have to admit, you're a bit neutered without prophecies though. And $70 is stupidly high imo, it's only something like £15-17 ($30) over here. You could probably buy it from the ingame store cheaper surely? Not saying you MUST buy it, but it may help in terms of complete build construction. Who knows, perhaps you can come up with Factions only variants after a while ;D
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. Ive looked at GW wiki and most of the builds require atleast 1-2 proph skills that i do not have 
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