Louisiana LLC Tax Question

I would think it's a simple question, but Google does not agree.

If I want to make $24,999 a year with my LLC, how much tax would I pay to the feds and state? Also, do I have to pay med and ss tax?

I am putting in a bid of a lawn care contract at my workplace and want to know if it will be worth it to do this one property after costs.

Thank you :)