Having rebuilt a number of these for a variety of reasons my primary advise would be to do a complete engine refresh, as apposed to just replacing old/damaged bits. I would advocate a complete stripdown and rebuild and if you are not going for big power then stock internals (excluding oil pump) should do the trick.
These motors are amazingly robust until something breaks and the chain reaction that it generates is massive. You need to diagnose the reason for the bearing failure. The point being that diagnosing it as oil starvation is not sufficient. Did the engine run dry (maybe an extended sump is required), did the pump run dry under cornering (need to baffle the sump), did the turbos spring an oil leak etc etc etc. This diagnosis will then give you a better idea of the modifications and replacements required.
All the above accepted you should always go for an upgraded oil pump and do the modifications on the oil return. These make for a massively more reliable RB in the long run.
In light of your other points I would go for a cometic head gasket and ARP head studs. If your turbo's are showing signs of age i would not go down the refurb, port and steel wheels, i would simply replace. In the long term the turbo housings crack, develop oil leaks and can be a major pain in the ass. I have even has issues with second hand HKS turbos that I have had refurbed.
I general I would advocate that you approach the rebuild from a defined power target and then build to that target using the correctly spec'ed parts and modifications. That way you are not going to have to buy parts again and again as they fall short of your eventual power goal.
I am pretty sure that this is really a case of telling you to suck eggs but hey ... you asked...
cheers
Nick