Where this "Moses has a great kicking game" has come from I'll never know. He has one kick, bomb it up hope for the best, since and repeat 80 times a game.
It probably depends on whether you are picking a half to win the series this year or are you looking for next season and beyond. Right now, you go with Reynolds, who can play with anyone. I would strongly consider Cody Walker to play 6, he's the only 6 that is closer to Munster on form, Luai is ordinary at best.
If you are happy to not write this series off but play the long game, Hynes at 7, with Luai at 6 (purely as he's been there before). Next year Cleary at 7/Hynes at 6.
I'd go the first option myself.