[Alneyan]

I can tell you it is not possible to use Stellar Manipulation cloaked, at least it does not work with Warp Closers as I found out in my KOTH game. (And I deserve to be laughted at for the remainder of my life for losing three turns to destroy that worm hole while the EEEvil OnEEEs were breaking through somewhere else, but I digress)

I think you can open a Worm Hole (which is the very first order in a simulatenous game) and send your ships through this one, if you order them to go to the targetted system. They should use the fastest road available and will travel through this Worm Hole, if it is indeed the fastest course. Not that I haven't checked this one yet, so it is only the theory (and what I read once or twice on these forums, and perhaps in the Newbie FAQ). Hope it helps!