can i put golden vow AOW on a dagger (sometheing lightweight),use it and i still get the dmg buff on all my weapons?

so im alr using flame grant me strenght and i want goldevow but i dont have 10 levels to spare,so i came across the golden vow ash of war and i have 2 questions

1. can i use it on a dagger and get the buff on my weapons? (im powerstancing rivers of blood and nagakiba)

2. do i use golden vow aow first or flame grant me strength?