Koala

I have some few questions about affidavit support for k1 visa
Any suggestion appreaciated!

my fiance is in the U.S military now.he will need the following
documents for my k1 interview
1.Bank statement
2.employment statement
My question is .... for reaching the poverty line (100% for military
personal)
we are thinking getting an employment statement from the military
showing his annual income and some bonus he got from the military.Then
my fiance will go to the legal service to have this notarized.Even he
doesnt have much in his bank account.and he just started his career
last year ( so the Tax return is not good for us )
So is it enough to have the employment showing his annual income is
higher than the poverty line??????

thanks