re: What fruit trees have you had success with in south Louisiana?

A bit of advice before you go and spend money on trees have your soil tested.

I have two orange trees that did well until that freeze last year. I think the blood orange isn't going to survive. Others I've had were peach which did not do well and eventually died somewhat until I cut it down. Fig tree is doing alright but not tall at all. Blueberry bushes didn't do well and died.

A simple soil test of where you plan to plant trees or bushes would help you to know a lot to make whatever you plant thrive and produce well.