How difficult is it to turn an engine by hand?

That seems about right, adding all the valve train would definitely increase that. So my numbers are pretty close to that. Im sure there is no need for concern in my case than.

Ya, I'd say you're ok there. As long as your still sure about clearances, on a stand I doubt you will see a difference on a torque wrench between .001" and .0025" but at 6000rpm your bearings will. Cheers