Well It Finally Happened

Okay Guys,
So disaster may have finally knocked at my door. We finally got the engine started and wound up with 3 psi of oil pressure. I allowed it to run for about 30 seconds but no oil pressure (I have a remote oil filter and cooler so I figured it might take a while for the lines to fill. I did pre fill the filter). After troubleshooting a bit we found out that we had the in and out lines reversed at the filter. We reversed them and decided that we wouldnt chance it so we used a priming shaft on a drill and wound up with 70 PSI on the gauge. I didn't feel comfortable without checking so we pulled valve covers. We are not getting any oil to the rockers (yes we tried rotating the crank but we weren't able to get any oil flow. There was some oil puddling towards the back of the head but I didn't see any oil flow like when my engine builder primed the pump at the dyno session. I am very disillusioned at this point. It's been a long hard road and I am getting tired of all of the setbacks. Any ideas guys? Any help and encouragement would be appreciated. I just hope I didn't do any damage when the oil pressure diddnd come up. Thanks