STR will give you more melee damage. During classic you won't have a ton of great +stat items.
str is a solid choice.
edit: However a Half-Elf paladin has the lowest starting Wis 65 of all the race choices.
idk that's a tough one. 100 str vs 85wis
offtopic- half-elf has the highest starting Agi for pally which will cause you to be hit marginally less often.
https://wiki.project1999.com/Paladin...ing_Statistics