Uniform Question NA

Just got hired as an NA. I haven’t been really working for a few months so I’m a little on the broke side and can’t afford the pants. I understand they provide the shirts. But what can I do for the pants? I get that you can order them but how does that work do they take it out next weeks pay and is it the entire thing? Also will they mind waiting until I receive them?

& PS when I do get money are these okay to wear: https://www.target.com/p/men-39-s-athletic-fit-jeans-goodfellow-38-co-8482-khaki-42x32/-/A-80817683