Should I keep this dog or try to re-home her?

The dog is a 3 year old KC reg Vizsla female who I have bought from my step-mother (she wanted rid of her bigger dogs and was thus selling them all cheap). I bought her a few weeks ago, with a view to breeding from her (I am already a good dog breeder of Pugs and Bedlington terriers - my 2 favourite breeds) but my fiance loves big dogs like Vizslas and Dobermans. I said we should get a puppy doberman to raise with the smaller dogs to respect them. But the 'bargain' adult Vizsla came along... And thus we now have her. The problem is I like my dogs to live indoors and not in kennels and she is used to kennel life (making lots of mess) though I do crate her I cannot keep her in a cage all the time. And she barks at 4-5am and wakes me up so I'm pretty tired these days... We have close neighbours as well and I worry they'll get annoyed. Furthermore, upon introducing her to my existing pack (on a leash) she went for the female Pug (a breed so placid!). So now I'm worried, I think I've made a mistake getting her. My fiance wants to keep her but he works and I am the one at home with her all day, trying to keep the others away from her. Its stressful. Options then are: Rehome her to new residence. Or take her back to my step-mother (who will rehome her anyway). Or move house to a more rural accomodation and put her in a kennel in the garden..??? The Vizsla herself is a good specimen of the breed. Great with us humans, just obviously wanting to be top dog with the others - hence the aggression. I don't know what to do. I feel guilty and don't want to confuse her further by re-homing her, but can we make it work if she stays? Any advice will be greatly appreciated.