Choosing seed type and next steps

Afternoon everyone. Just wondering what seed I should be going for here. As mentioned in my previous post, I unknowingly put down a mixed seed blend of perennial rye and chewing fescue. Photos attached are from 10am, 12pm and 4pm (times at top of the photos) Just wondering which seed I should now go for (NZLA ofcourse) and which steps I can now take to remove the mixed blend. Also, looking to buy the NZLA starter kit, would I start that now or when it’s more established? Located in christchurch. Thanks everyone, loving the app!