Normally I’d build this recent arrival up with Campagnolo Nuovo or Super Record. That being said,
A: I don’t have a complete NR or SR groups currently hanging around,
B: This particular Woodrup is a light touring model with eyelets, rack mounts, etc. so a standard racing group wouldn’t really be appropriate anyway.
If I really wanted to put Campy on it I’d thus have to hunt down a triple setup and that’s never an easy or inexpensive option. My current plan, which will likely change 19 times between now and when I actually start, is to outfit the bike with a nice period Suntour touring kit: Mountech derailleurs, Suntour barcon shifters, and maybe a beefier set of side pulls. The Sugino AT crank won’t need to be changed because it’s already period and great quality, but most everything else will have to go.