My questions are:
1. Does it matter if I kill Mister House before I get the NCR-quest to do it?
2. When I activate the Securitron-Army before I install Yes Man to the Lucky 38 Mainframe would it still be Yes Man's/my army after I install him?
If it is possible I would like to first kill Mr. House, and then activate the Army. It would safe me from killing the whole Fort again. But if I do this am I still able to continue the NCR-questline up to the point where I can choose the destiny of the BoS?
P.S. Spoilers doesn't matter for me, because I've already completed FNV once.