Timing cahin Change should not be such a headache I know for a fact that they use a tool which connects the new chain to the old which then gets pulled all the way around until the new chain comes out again after which the old cchain gets reconected and job is done taking no more then 10 Minutes, cost wise I canot remember what it was but defently no more then $400.
Apart from that the only major expense we had with our 135000 Miles car was a blown headgasket, I presume thats down to it being tuned.
Apart from that:
1. Expansion tank
3. 4 exhausts
And loads of tyres but that's down to the bad roads in the U.K.
I can only recomend 190's.