I'm partial to a female Crona, also. I just think she looks cuter that way. >.>
There is an awful lot of Kid/Crona art...'tis a pretty couple.
I'm not a hardcore SE shipper, but I do find myself shipping Soul/Maka, Black Star/Kid, Thompson Sisters/Kid, Kid/Crona, and I can't help shipping Maka/Crona. I can see them having more of a sibling relationship, tho.
BTW, I love your theme.