1998 2.8 TDX just purchased,where do i start?

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new to daihatsu and new to fourtrak.
just aquired a 2.8 TDX fourtrak with full service history and 110 000 miles on clock,road tyres(bald on front).
changed tyres for, 4 general grabber AT2,255/70/15(will post results),changed both front calipers/pads(blueprint) and brake fluid and i have now changed oil and filters and flushed coolant system and replace coolant,timming belt next on list.i am very much smitten with this new toy!
i have a few questions:
1, what mpg/miles-to-tank-full should i expect?
2, what should i look out for? (mechanical and electrical)
3, turbo and intercooler pipework showing a very very slight oil seepage, should i worry/replace?
4, i will want to lift suspension and install winch and bumper over the next few months,any comments/pointers?
i am sure there will be more!