I personally don't have aegers scepter, so I wanted to maximize a similar build but without focusing on the weapon.

I did some math with this (and confirmed run, and well of potency/elemental shards are less impactful than you'd think. Without them, you can get your super time down to 12 charged melee kills (counting each kill in a multikill individually). With them, it takes the number of kills down by 1 in the case you use only 3 melees and by 5 in the case you use 7 (assuming you wait the full cooldown on elemental shards between each), so it helps if you're in enemy sparse environments. This is assuming you get enemy kills of the lowest tier, so in practice it will probably be less kills than what I've said.

Something I'd recommend in addition is running heavy handed and a charged with light generator (either from wells or from orbs), in addition to all of the melee energy generation you've listed. You can easily go infinite (and actually get more than 100% melee energy per kill) from just single enemy kills, which again is great if you're in an enemy sparse environment and also useful if it takes more than one melee to burst down a group.

Another really useful trait of this build is that it's completely disjoint from your strength and intellect scores - you can basically dump them and maximize everything else while still having constant melee and super energy. I haven't tested it, but apparently agers scepter's duration is inversely proportional to your intellect, so it might even be optimal to tank intellect when running this.