Email student services and ask about off campus housing. Sharing an apartment off campus and cooking for yourself with shave off 5k at least - Nicholls is in a small town and rent is relatively cheap + cooking for yourself will save you a lot of money.
COA typically includes books, so instead of buying them rent them or buy them used or use the College library reserve.
I agree that it/security will have a much better ROI than a general business degree.