You will still be saving a cat from a shelter to give it a better life with you, that is the important thing.
I agree with Sas, I think that Ms Rose would be a good match, she is an orange female which isn't that common and she is a pretty & fluffy lady like your Robin and Peanut were. It sounds like she is a total lovebug too which I think you and Terry and Jack would all enjoy having her around.
Not too sure about the name Apricot, I do like the Rose part or you could call her Rosie.
I do think you should ask about her and see if the shelter thinks your home would be the right one for her.
(I think she looks like a great match but you all need to meet her first and see how she gets along with Jack.)