I'd say no. It sounds kind of high to me but, if you can't put it back together and tune it youself then all prices will be that high.
Dune port 400-450
lighten flywheel 65
Timing plate 35
piston kit 160 http://www.magicracing.com/Wiseco-Piston-K..._p_133-135.html
Bore and hone 90 http://www.farmandsandtoys.com/services.asp
welding crank 50 http://www.farmandsandtoys.com/services.asp
Tuning ??? You will have to fine tune it when you run it anyway
Clymers manual 35 __________________________________________________________________________
$885 + A little time
Compared to $1700 you make the call