I'd probably stop somewhere around level 54, going that far to get Coil. If you're ever going to touch on competitive play, stat-raising moves - Coil increases ATK, DEF, and Accuracy by 1 stage - can be a great asset on certain builds. Even if you don't learn it, having it stored as something it forgotten so the person who makes your Pokemon relearn moves can re-teach it to it can be a nice time saver.
Wild Charge is gotten at level 59, and is really Eelektross's best move. A base 90 power physical Electric attack. However, it can be taught via a TM you should be able to find somewhere around Victory Road, so if you're impatient, I don't think level to 59 should be completely necessary.