Your wife will NOT be pleased but she will probably get used to it about 10 years from now. Bayonets and rifles or the desire for them seem to breed like rabbits once you get started and it sounds like you are very, VERY close to getting started. One rifle turns to two, two to five and then you have to start coming up with inventive ways to store them all.
I bought three approximately 25-28 years ago over a several year period. Then kids happened. Kids now mostly on their own and the floodgates opened slowly at first and then boom. I am an official amateur collector/historical presenter.