I'm at that point (Head job vs New Motor)

Hi all, My latest project has been replacing my head gaskets, since I have had some outer-coolant leakage and random overheating troubling me for some time now, I decided to just tear the top of the motor off and go from there. To my Un-surprise the coolant channels were almost completely clogged, the valves look like ****, and it appears that this motor hasn't been touched in decades.
(Jerk that sold it to my wife said 5k on a rebuild)

My 273 has the odd-angle heads (1964-1965-2465315 casting #) but I do have the Eddy performer intake and carb already on it. I'm at that point where I'm deciding on either just getting a head job (No, not the kind you get in Thailand), and reassemble or getting a new motor. Luckily, All the other cars I have had came with strong motors so I have never priced a head job. My big question is whether it is worth it to get the heads done and reassemble this motor or just get a crate? I use this car as a daily driver, cruiser, random car show attendee and would like an economy small block that runs well.

After reading what I just wrote I realize that I really just want someone to hold me and tell me it will all be ok. Head Job optional. :cheers: