Well, I guess I agree that Vorpal Spikes is more useful early game than Rupture. Still, Rupture is your main damage source, and I think that Rupture should still be maxed first, but really start using it to harass more after Tear of the Goddess. I also agree that you won't focus on AAing during teamfights. However, when you use your skills, they will be on cooldown, and Rupture and Feral Scream have fairly long cooldowns (10 and 16, respectively), so you will "have" to AA in order to help your teammates get kills.

Well, I guess I'm going to have to rethink my item order. Thanks, though. ^_^

Rupture is no doubt useful. But you seem to have missed something. You auto attack in Team Fights? You shouldn't be. You should be going Rupture > Feral Scream > Feast rinse and repeat. Plus in early game you can go mid with Vorpal Spikes. Your Vorpal Spikes does 20 + 56 damage at lvl 1. (You attack with AA, VP takes effect and does an additional damage) however Rupture does 80 damage. True Rupture can target multi targets, but you have a very very shallow mana pool early game.

One other thing to solve your mana problems, take ToG before RoA. It will completely solve all of your problems.

Hmm.
Vorpal Spikes first does make sense. However, I feel that Rupture has a higher priority than Vorpal Spikes. Vorpal Spikes starts becoming more useful late-game, where there are more team fights and you will be auto-attacking more. But since Rupture does more damage early-game, I feel that you should max that first.

I just realized that Greater Glyph of Scaling Ability Power isn't worth it. So I will change that to CDR Glyphs. Thanks for the feedback. ^_^

Replace the vitality seals with cooldown imo, level up vorpal spikes as your first skill, trust me, it helps with that farming and mana problem early game cho has. Then you can just go with the rest of your skills, but I always go with VP first for farming.