1956 F600 272 2bbl. 51,xxx miles

Questions for you experts:

1.) How much "smoke" or vapor is normal from the breather and or oil filler cap? I'm thinking it's moisture/condensation from sitting for so long but not sure. We only ran it probably 5-7 minutes so it was warm but not hot. It does not stink, but it's a fair amount. Puffs out like a diesel. I ask because I'd like to try to get it up to temp before changing oil.

2.) I have read until my eyes bleed both on this forum and others on the interwebs but I'll pose it again. What weight and brand oil and/or additives WOULD YOU GUYS USE in this old girl? I have a converted oil filter set up, FL1A. 

3.) Is anyone on here on the east coast? I'm in VA about 2 hrs west-ish of  DC. 

Thanks!

Aaron

1956 F600 272
2005 F250 5.4