If you like the minis in the Red Veil box, it is indeed worth getting. Both factions are quite playable and can make for very competitive armies. The Beyond Red Veil "booster' is a nice addition, but not mandatory. (The disclaimer here is that I have both, mostly because Haqq is my main faction. You can see the painted Yu Jing in my P&M blog. link is the image in my sig. No apologies for the shameless self-promotion.
Remember to check the resources on the Corvus Belli site too, http://infinitythegame.com/,
including the free and extremely useful army builder.