Fresh engine, wiped cam? Tick? (new pics added)

Well... I was there when the shop rebuild it, so I'm pretty sure it has 250mi :)
They said it was $1500.00 to tear down the whole motor and rebuild it. they said $500.00 to install a new cam.
I did change the oil and there was like a metallic film floating on top. I didn't think metal would float, but maybe small enough particles would. It just looked like a swirl. Kind of cool looking really. At the time I thought maybe it was just from the cam lube or whatever. It was the first oil change. I looked for bigger pieces of metal, and I used a telescoping magnet inside the oil pan to see if it would pick up any larger pieces, and I found nothing. Nothing large in the oil either, just a swirl.
I would think the bearings would be good? Is there a easy way to tell?
I do have bolt down rockers, and I adjusted them to 20ft lbs. When I adjusted the rockers to 20ft lbs, their was no play in the push rods at all. I will look again tomorrow.
How do I test a lifter to see if they are bad? are they just squishy?
Timing chain and everything is new.
Thanks!

Oh, is it ok to use new lifters on a cam with 250mi? I know your not suppose to switch the used ones around. What about new pushrods? Thanks!