Lucky Charm got nerfed 6+, everything below works as before, also Lucky Charm is worthless at 1 it only gives you gold drops, no item drops. (getting 3 asap is important but even 2 is quite good).
Which weapon you use doesn't matter too much unless you wanna use skills that scale of your weapon.
For Necro in Act 2 for example the only thing about your weapon(s) that matters is passive boni like Intellect, crit chance, armour, abilities, immunites etc.
