I have old tubes from the 1930s that still hold air really well, supple flexible rubber.
I had a tube from the 1970s blow out the other day.
And new tubes seem to get leaks rather easily....
I'd go with old tubes if they're still good. Less exposure to sunlight & fresh air the better (keep them aired up in a tire)
Tires? Old ones are tough, but sometimes new ones are good.
I'll be replacing my worn 1960s tires soon, they're not cracked, just worn down.