Time to address rebuilt engine oil consumption

So what valve seals are on there now?
I usually put the PCV on the passenger side(but thats no never mind). Pull the PCV hose off completely and check it internally for oil.
I have never seen oily oil migrate up the plug threads, and the firing tips be dry. Wont say it cant happen. Just in 40+ years, Ive never seen it.
You have a good plan.
I cannot understand how the LD test could give such wildly varying results. You can see though, why I hate a lying LD gauge. If your compression test results had been a little lower, coupled with the huge LD, and the oil burning/oil loss, It would have pointed straight to a tear-down. And Who would be the bad-guy, when you couldnt find anything wrong at that time? Phew, that was almost too close for me.
I have another test for you.Plumb a vacuum/fuel-pump gauge onto the dipstick tube. Pull the PCV out of the cover and lay it and its plumbing aside. Then seal all the breathers. Start the engine and watch the gauge while it idles. The gauge should absolutely not show vacuum. In fact it could begin to register pressure.That would be normal.Do not let the pressure rise above 3-4 psi, as it will begin to want to blow out anywhere it can.And if it succeeds, thats just more work for you.Oh this test will prove that the intake is not sucking oily air from the valley.
Ok so carry on....

Oh, and if your results of the compression test do come in that high, you will be in good shape for a bigger cam,should the bug bite.Heh-heh...However, once the pressure goes that high, timing the beast can become a challenge.