Some Flathead advise

[msalamanca]

Hello everyone,
I just purchased a EAB Flathead, its stock.
It runs, but needs to be updated. I am not looking to do a total rebuild.
Looking to update, clean and drive.
From what I have read, some say to take the covers off, others say if its a runner then dont risk breaking the head bolts. I know it needs new water pumps, dizzy is good on it, I know the carb needs rebuilding, some headers, new plugs.
When you people get a flathead, thats not destined for a total rebuild yet, what do you guys do? I did a bunch of searching on here, there are 20 pages of info, great info.
Just trying to figure out a starting point, like a mini check list.
Also where is a good place to get a Radiator for a 51 shoebox?

Thanks
Matthew

oh and here is a pic of it.