Hello Lamya and welcome to our family.
If you love cats so much why get rid of all of them, surely you will miss them if they mean that much to you, why not pick a favorite or two and keep, many of our members have cats, dogs or other pets along with their greys and other birds, it can work if you supervise it properly.
I am a little concerned about you getting a grey for they are a lifetime committment, like the cats would you one day decide to rehome your grey because you want more cats in your life again. This is a decision not to be taken lightly for a grey bonds to their human and suffers greatly if that bond is broken. You need to think about this long and hard to be sure this is what you really want for too many of these awesome creatures end up in rehomes because people don't think it thru. I would advise you to read thru as many of the threads here as you can for then you will have more of an idea of what you are undertaking but if it turns out this is what you really want then you will have our support, remember it is a lifetime committment.