Lol. Settle down. I am not disagreeing with Ken at all. But I have access to a brand new cam that I can install literally in a few days, versus the 3+ weeks Ken is out due to material. So I was just getting opinions.
I don't think it's a terrible idea. Remember that what the cam grinder is recommending is going off of what you told him you wanted. The engine itself can support more cam that what was recommended by a decent amount. Even if you're at the lower end of that compression number you'll have enough compression to run a hotter cam. And with 4.10's you'll have the gearing too. So you won't turn the engine into a dog with the bigger cam.
I'm going to compare with what I know, which is the Lunati Voodoo series. The recommended cam is light on lift compared to all the Lunati cams, it has much slower ramps. Duration wise it's about halfway between a Lunati 702 and 703. Your Dad's cam has a bit more duration than a Lunati 703, but less lift. And it's closer to the 703 than it is the 704 IMO. Biggest thing is the lobe separation, the 112 that your grinder is recommending will give you a little more vacuum and a little more lower end compared to the 110 that all the lunati's and that comp have. It's not a massive difference but it is a difference.
I run the 704, which I already said is a bit hot for what I do. But honestly, your engine compression can support a 704 and so can your gearing. And although the 704 is a little wild for commuting, I've put over 30k miles on my car as a daily driver with that cam. It's a little rowdy when you get stuck in bumper to bumper traffic but it does work! And it's a lot easier to deal with now that I have 4.30's instead of 3.55's, 4.10's would be fine. The 702 and 703 are pretty well regarded as good street cams. The Comp cam that your Dad has is definitely hotter than what is being recommended to you, but it's still within what your engine can support and it's less than the 704 I run. It would have been easier for me to downgrade my cam than install a T56 and 4.30's, but I kept my cam and did all that other work anyway. It's a fun engine.
I wouldn't have any hesitation running the Comp cam your dad has. It really comes down to how you use the car, if this is just a fun weekend car I don't see how it's going to be a problem. If it's going to be a daily driver you may want to stick with the grinder's recommendation. 3 weeks may seem like a long time now, but once the car is together you're not going to want to tear it apart to swap the cam, so 3 weeks in the grand scheme of things isn't that long.