On the warrior numbers, this gives 2 warriors before the second worker which have to cover the second city, exploration and capital (not needed for happiness). The second city builds 2.5 warriors by the time it reaches size 4 (so can withdraw the defending warrior that was built in the capital and one other, the second built warrior has to stay for happiness), and then post granary the capital builds 3 warriors to reach size 5. So that's 8 warriors by T50, plus the scout if it doesn't get eaten.
The main issue is that most of the warriors are positioned awkwardly, but it shouldn't be a problem to both explore and cover everything. The only thing that I think is mandatory is that shortly after the second city is settled and it is churning out the first warrior on the way to size 2, is that the defending warrior needs to run over to the capital to defend the workers that road to the third city location and defend that settler.
The main issue is that most of the warriors are positioned awkwardly, but it shouldn't be a problem to both explore and cover everything. The only thing that I think is mandatory is that shortly after the second city is settled and it is churning out the first warrior on the way to size 2, is that the defending warrior needs to run over to the capital to defend the workers that road to the third city location and defend that settler.