Pete,
From one K-State Grad to another…I have 15 years in Florida with our live oaks. Live oaks are hardy trees, which like dry feet. The only concern with live oaks are when the site is raised thus creating water well within the drip zone. If grading create water retention area in the root zone, then the long term result (10-15 years) the roots will rot and during the next hurricane will blow down. It looks like from your photos that grading is not an issue, but if it is, you been warned.
Joe Beck, BLA KSU 1989