Is your suburban a Transformer? I have never seen anything change smooch as you just did in 3 pages. Every time that I wanted to comment on something you did I just scrolled down a couple of inches on the page and you changed it. lol.
In the most current state that your Burb is in I really like it. The fender flares would look good body colored if you choose to put them back on. Unless you plan on doing serious off roading and also have an 8ft garage door opening, the sas swap isn't worth the money. Many people wheel very hard with the ifs front and if locked it will perform as well as a sas. You don't look the rock crawler type, so put that money elsewhere. Gearing will be the best swap that you can do, it will perform better off road and on the highway. 4.56 & 4.88 will work great for 35's in Florida and installing a locker in the rear will greatly improve your travels into the wilderness. Installing a part time locker or LSD will help you go even further without compromising the driving aspect of your day to day commutes. Better breathing for the engine (in and out) will help and still leave it reliable. Don't forget the trans kit to beef up that part of the drivetrain.