Some typical engine health checks on a used car should be enough to know whether its a good idea to push power. Of course all fluids should be changed as well along with new plugs.
Compression
Leakdown
Oil Pressure (I would be interested in knowing what is considered spec...bad, good, excellent for ea.888 gen3)
Water pump check
Valve clean if over 60k miles
I'd have no problem sendin it those checks looked good.
Since the turbo was oil starved, something caused low oil pressure....
For all we know the previous owner of the car would start-up, pull out of his driveway and floor it onto the highway every morning.