For the type of driving that you are suggesting....I would direct money towards a basic set of skids (I have Ricochet....awesome
) and decent tires first. After that you can determine what type of lift (if any) that you may need.
I would disagree that Icons would be the choice for you....unless you have money falling out of your pocket or you are susceptible to needing uber-cool components, probably an OME (or similar) lift would do just fine.....that is if you determine that you even need a lift.
I do appreciate the clearance that I got from a Demello front bumper and love the sliders that I picked up during one of his many group buys....money is always well spent with Jason.
Don't forget the little mods that make life better in an FJ...a high lift jack, decent floor mats,....Oh yeah, save up for a new windshield....you will need one of those too