[Rufton]

I would do some spot quality checks.

Some easy spot check examples:
Verify dip stick level indication correct.
Verify lifters adjusted to spec.
Verify #1 TDC lined up correct.
Verify >50psi oil w/ drill prime.
Verify oil flow to valve train w/ drill prime.
Verify head bolts don't turn when torqued to spec.
Look closely an intake end gaskets/RTV.
Note quality of gasket/RTV application.
Drop pan and verify all crank bolt torques.
Verify oil pump bolt torque.
Verify crank clearances w/ plastigauge.
If all pass and I'm feeling lucky I'd consider startup.