I was traveling, so late to the party, but GREAT plan!
Plus, for what you want to do, Florida is very solid, even if you decide grad school is warranted. My son works in a very niche, complex area of fluid mechanics. His boss is a widely respected name with lots of impressive industry experience under his belt. He has a BS only from a school I guarantee is not on your radar that you probably haven’t heard of. Companies don’t hire school names. They hire proven experience.
To that end, learn for knowledge sake and mastery before worrying about the grade. Do the former, the latter will follow. Reverse them and it might not happen. Get club and/or research experience. Start looking for internships during your first year, but don’t be bummed if you don’t land one until your third. It’s an uphill battle when you have little to offer. Lastly, do anything and everything you can to build your network. Referred candidates have a MUCH higher likelihood of landing a position over and equally qualified cold applicant.
Good luck!