I think it reflects positively on you that you're considering all these things, worrying about your child's future before you even have them.

However, I think your concerns are misplaced. Plenty of single parents raise healthy, well-balanced children. Kids care more about whether you love them, not whether your family's structure is socially widespread or not.

Consider also this: we live in a society, there is an entire web of connections between people. Your kid is gonna interact with you and your partners' family, cousins, teachers, other kids, people on TV. It's not like kids grow up in a void or something, where they'll never see a woman in their entire lives.
Some more food for thought: Just because somebody is female it doesn't automatically make them a good mother.

I'm gonna let you in a little "secret". Most women are not born with the knowledge on how to be mothers. They learn that on their own with mostly trial and error after they've given birth.
And what is a mother anyway? It's a role, just like any other. Someone who takes care of the family, who brings compassion and unconditional love to her children and always puts them above her own needs. But is this really gender specific? Apart from the giving birth part, no, not at all.