If you have to spam at least read the book...frequent small meals and "just say no to fat"? PLEASE.
I started out at the same weight as you, texas...as a former (and future) long-distance hiker I have the same passion for walking and I think it's been a key element in losing fat along with diet and IF. I applaud your attitude and would just say to pay attention to body feedback--aches and pains are inevitable, but don't ignore persistent discomfort in the same area as injuries suck!
I had to start with small walks (<1 mi) and build up gradually to longer/steeper daily hikes. I also had several embarrassing falls that sprained ankles/shoulders/elbows...momentum is a killer when you're that heavy. Happened because I got distracted and wasn't paying attention where I was putting my feet...guess that falls under the "avoid stupid things" primal rule.
I'd keep a sharp eye on overall energy level too--it's great to know you're burning fat, but you don't want your metabolism slowing down from overtraining. It's something I struggle with continually, because you do get very used to racking up the miles and being outdoors most days, and it just feels wrong to take any kind of extended break. If I have a couple of slow/sluggish days I force myself to take a few rest days and eat extra hearty until I'm jonesing to get out on trail again.
6' 2" | Age: 42 | SW: 341 | CW: 198 | GW: 180?
“Life can only be understood backwards, but it must be lived forwards.”
― Søren Kierkegaard