You are well above the required ACT for LSU. You do not have the 3.0 but with a 29, I would absolutely apply. You need a 3.0 to go with the 29 for scholarships and the highest level of TOPS but you still qualify for approximately $7,000/year from TOPS. Are you a junior or senior? If you are a junior, you have time to over 3.0. Remember that LSU will weight your GPA so your school’s weighted GPA is irrelevant.
Never hurts to call. I’d call TOPS as well and see if you got a 3.0 your freshman year if you could bump up to the TOPS for a 29 ACT.
http://sites01.lsu.edu/wp/admissions/become-a-tiger-2/freshmen/freshman-admission-requirements/