I think replacing the nice orange bolts with stainless ones is in order and in terms of mods I'm looking at a remap to start with and in the semi distant future lift kit, snorkle and A bar.
Make sure it’s running well and serviced before upping the power. Chipping an engine for example, to make up for lost power due to wear won’t end well. You should be fine they are reliable engines
Snorkel - IMO they are useful in a desert but mainly have no practical value other than aesthetic, of which I think they look crap on a FL.
what I think doesn’t really matter though, aslong as you enjoy your Landy the mod ‘works’