Had rough country in my ZJ, front right coil sagged after the second outing... what can ya do when you're on the other side of the world.
An XJ will go good with 3 inches, If I were you I'd price up some old man emu front coils and shocks, make up/get some spacers made for the rear leaves with longer U bolts, drop the transfer case 1" and leave her at that. At a guess that will set you back 1 grand, which is a cheap lift.
You could also go for extended rear brake line (or just bend the steel line before the hose downwards), a panhard rod drop bracket or adjustable road out of the states, depends on how fussy you are.
My old XJ had 2'' OME lift in it (shocks and springs), I added 2'' spacers under the leaves and ontop of the coils (without changing the panhard rod or track arms) and she drove and handled like a new one, couldn't fault it. After the lift and abuse it would still the the best handling and riding XJ I've driven, but you wouldn't think it.

JK Wrangler 35s.