I'm thinking of keeping my extra daughters in the basement
I'm horrified to read this. Why are you keeping children in your basement?
I'm planning to get extra daughters in order to raise my apparent average number of children.
You should never make children be confined in an area like a basement. This is unhealthy and they will become sick children.
I'm planning to make them have my genes.
Are you implying that you will sexually abuse them as well? I think that is very illegal and if you're caught you will end up being forever locked up and you will also lose your children and they will end up growing up with trauma because of the things that you have done to them. I hope you don't go with your plan and just raise your children normally and free from any abuse.