What to check after a few hundred miles on a rebuilt engine?

Hey folks,

I've got a few hundred miles on my 1974 Dart that had it's first start in many years this spring. It has a rebuilt 360 sometime since 1984. I can't verify how long ago because it was 2 previous owners ago.

I've checked compression on all cylinders and it's good at ~125psi. Plugs are nice and clean with a grayish brown. It runs well when warmed up, hard to start after sitting for a couple of days.

It's leaking a little oil on the drivers side head which got me thinking. What should I be checking on this engine now that it's been run for bit? Do the heads need to be retorqued? Should I be going over valve train, etc. or just run it as it stands? I would like to stop the oil leak, but it looks like I need to pull the headers off to get at the head bolts. I don't relish the thought of doing that, they are not nice, Hooker headers, almost impossible to get at the bolts without some fine wrench wrangling and only getting one small turn at a time. Took me about 3 hours to install new exhaust gaskets. The oil is of course dripping on the headers and makes for a nasty smelling drive after an hour or so.

I'm just curious what I should be doing next. There's lots of threads on how to break-in an newly rebuilt engine, but not much on anything that needs to be checked after it's been broken in.