Enchanter; should I reroll?

[Treehorn]

Just started playing again with RL friends after not playing for 5 years or so -- my highest level character is a 23 DE Enchanter -- Apparently I put 25 points into INT and 5 into CHA, which I understand is the opposite of what one ought to do, and that DE Hide no longer grants invis vs undead, which is why I recall choosing that race in the first place (afk purposes).

Should I consider rerolling? Is Character creation INT-vs-CHA that big of a deal? How many hours would it take me to get back up to level 23, roughly? Have pretty decent gear, from doing a dozen-or-so Stein of Moggok runs back when I played before.

Thanks in advance for advice.