Spectres

[Estu]

I've never leveled on specs before, but my wizard is currently soloing to 39 to be a port whore. Right now he's going after the gnolls outside Infected Paw, but in case they hit light blue before 39 or they're too crowded, I was thinking of hitting up spectres. I have a few questions about them, though.

First, what level range are they?

Second, do they have any special abilities that I should be worried about if I'm not meleeing them?

Third, where are they apart from the Feerrott and Oasis?

And finally, how crowded are they, particularly now that Kunark is out?

Any input would be appreciated - thanks. By the way, my current method of killing is single nuke kiting; I don't have JBoots or SoW potions. If I happen to get a SoW from someone I'll quad kite, though this is not always possible on every dark blue because my int is only around 150.