If Knights already has a match trigger installed then it would be a good choice.
As far as the CQT red dot is concerned, most people have one gripe: the objective lens and field of view are to small for CQB. Most people say it is too bulky for the lens to be so small. Trijicon offers a tri-power (quad power, really) that doesn't rely only on batteries. It is also cpapble of magnification i believe. That may be another choice for you.
If you really want a CQT, then don't just handle one in the store. Try and find someone at the range who has one mounted on their rifle so you can test it out. Or if your range/store has one you can try on either your rifle or a rental one, do that. If your shop is kind enough to have a return policy on accessories, then buy it and try it. Don't just assume that it will work for you because you picked it up and it seemed fine. When it is mounted on the rifle, it may be a completely differnet situation. Hope this helps and good luck.