Still need Apollo and sort of Star (though to answer her OOC question, she could stunt a lot of quickness without the no manual dexterity flaw and clear a path...or alternatively, she can just wait for Nightweaver.)
BTW, Raylis, by the rules, if you stunt an instant power, you can only use it once, but I'll allow you to have it for the rest of the encounter. This ruling will apply in general to stunted powers unless I say otherwise.
This also means that if you guys don't mind going later in the initiative count (and the main bads have a very high init count anyway, so you are only pushing yourselves behind the mooks), you can all delay until Nightweaver can shadow walk everyone, and take your actions after her. Once you are behind all the baddies anyway, this also gives you the freedom to use delaying to reorder yourselves at will for the rest of the encounter with no further cost.