No, luck is not really needed.
I just did mine this weekend and it is a Mage/SW/Hiding/Magic Resist fisher for fishing in dungeons and high monster areas. No Med on the char so I had MR & LMC the rest went to the resist so that I max 70 with protection.
An archery might want MR & Stamina Regen to keep the arrows going fast.
But like the other post it depends on how they have their stats/skills set.
I think to get full 70 I think you can add to mods at full power then the rest in resist.