I would highly recommend not buying any males until your females gain a decent amount of weight. You can save a lot of money by doing so. Some males can be ready to breed within a year, females at least 3 years to breed. I would take off all single gene males. One male can easily breed multiple females, as stated above you can end up with 3 or 4 genes hatchlings instead of double gene animals.
I like the list! Also to save more money try to buy all or most of your females in a package from a single breeder, most are willing to give a nice discount from selling them as a package.