Looking at an 04 FX4
#11
Walk away. You do not need this headache.
OP - you need to realize that, on these vehicles, the front hubs are engaged by default. Only engine vacuum is keeping them dis-engaged.
So, while you may say you wouldn't use 4x4 much, if you have a systemic failure (and it's not uncommon with lack of maintenance), then you may not have a choice...
Good luck with yer search. BTW - look fer a late 2008 model with the redesigned cylinder heads that use one-piece 12mm spark plugs. COP number 8L3E will identify ( as long as they are the originals ).
MGD