How many miles? That determines water pump, timing belt and tensioner replacement. Oil pump should be fine, but oil/water heat exchanger should be swapped. Could go to 11mm oil pump.
Buy a rebuild gasket kit. It will have most everything you need for much less than buying even a fraction of them individually.
ACL Race bearings, Stock or .001 over depending on crank condition and preference.
Why studs? Not necessary IMHO.
Clutch. Buy Mike's 6 puck & flywheel.
Pistons, rods and cylinders can't really be decided until tear down and inspection.
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