rocker box leak help

Yes, this is a good idea.

 

Also, use medium strength threadlocker on the rocker box bolts. Seems like ones above intake ports are always loose.

 

You have never said anything about mileage, hours or blow by on the engine, How long do you plan to keep it?
I have seen one run over a million before it slung a rod. One here huffing and puffing at only 500,000 miles.
If it made 750,000, and you are going to keep it, I would probably inframe it. Just fix what is wrong or inframe it. Just my opinion.