They may not be able to get it dead on, because it's a consumer device, but they can probably get you closer than where you are now. The THX people also have certified people who will set up monitors, but I don't have their contact info handy.
You should take Mike's advice: this could be a road to disaster. At the least, you could wind up in a situation where every other shot looks vastly different in the theater than what you're seeing on the LCD display. At the worst, the results could actually harm the film in terms of getting it approved for delivery.
I would not automatically assume that XYZ digital cinema color space will translate perfectly to Rec709 home video. You should also be aware of what your home video distributor needs for the final deliverables.
BTW, note that this is also true for audio. I've seen quite a few films wind up sounding awful in theaters after being mixed in small rooms.