See, the reason I wanna run Warglaives is because then I don't have to pay FW prices and I can just buy a box and then eBay for another single Warglaive, done and done.
Or you can take that fourth warglaive and covert into a Moriax if you have the spare parts laying around.
Warglaive is still a good choice. It's sweep attack will help get it out of tarpit units.
Given any thought to what house your doing (rules wise)?
Raven. Partly for the matchy sort of heraldry and appearance to the Raven Guard, partly for the "advance and shoot everything" thing; makes getting the Warglaives and Preceptor into melee easier.