Bandera

Very nice pair. You will enjoy them.

Sheldon Brown on IGH lubrication:

"Use machine oil, not a spray lube or other thin oil. Unless a hub has sealed bearings, also use grease, to form a seal at the bearings and help keep the oil in."

Internal-Gear Hubs

I use Phil Tenacious oil after the outboard bearings have been lubricated with a good quality grease.
A 30WT non-detergent oil works fine, like lawn mower oil.
Good excuse to get an old fashioned hand pump oiler w/ a long flexible neck to add the few drops of oil every so often and avoid making a mess.

Find a proper old school LBS that has a cotter pin press to remove them to service the BB, those OEM cotters are excellent quality and are getting rare & expensive.

-Bandera