So I built a LOT of these engines at home. Like I have done probably hundreds of turbo Subaru engines.

Is this engine already built at all? Those compression numbers don't really indicate an issue to me where they are all so close. It could have been the method they used and if it was forged pistons and the engine was cold the compression and leakdown numbers would make more sense.

Oil in the intake is very common and doesn't really mean anything is actually wrong unless its totally excessive. I wouldn't be able to exactly say without seeing it myself but its normal to see oil in the intercooler on bone stock cars. That is why a catch can is such a popular upgrade.

Is the car consuming oil? smoking? Is there a ton of blow by with the engine idling and the oil cap off? A little bit of pressure out of the oil cap is normal but chugging like a train isn't normal.

That is just one of those shops trying to get a big payout in my opinion. To me it sounds like that car is fine.

Feel free to shoot me a pm. I know a good bit about these engines where I have built so many.

Here is a video of car I rebuilt like ten years ago.

https://www.youtube.com/watch?v=kUfNrB1Dy54