As my setup, with binding on 6 and scrolls on the second page. I find in most battles, I use legcut, SD, scream, followed by a soul pot unless I'm taking heavy damage. I never change a skillbar once I get used to it because that's how you lose 1v1 at the most embarassing times in Knight.
Raptor is the best weapon for the warrior, period. I do use the 2h gigantic axe a lot too though because of the health bonus, resists, greater attack speed, and the fact that so many people use spear defense on Ares that the axe actually hits harder most of the time. Not to mention all of the mages on the human side.
Dual wield is useless, I've tested it thoroughly on bosses and in PK and it does not hit as fast as most people would have you believe. My raptor always did fine. It has also killed countless dual wielding warriors who believed their 'speed' would be able to 'overwhelm' me(Knight bronze).
Mirage sword is a very sneaky strategy, an alternative (for Ares at least) is the hellbreaker. I borrowed one from a friend back in August or so and was hitting buffed people higher than either the gig ax or raptor, because NO ONE wore club defense. (And it was only +7)
I used Iron Neck Skele Belt Dual WE Dual RoC, and the only thing I was disappointed with was the lack of AP. However, my resists, defense, and health sure made up for it. I still think I could've hit harder though. (I never did get a raptor +8 for myself, in tests when I borrwed one it only raised my overall AP by roughly 80 or so.)
Now to the armor thing. For the longest time, I advocated chitin over shell, since most people who see a chitin warrior will think 'Noob!' and run to try to 1v1 you. (I made about 15k of my total NP because of that. ) However, shell does give enough of a defensive boost for it to really be essential to be competitive at the highest levels(Knight gold, Knight powerleveling), as long as it is at least 1 grade higher than your chitin.
Recently, I made 2 +8 chitin pieces by throwing my old chitin set onto the anvil. (Carsomyr, if you are still around, those pads are the ones you sold SoulSlayer to give to me back in Dec '04.) The pads and the boots went to +8, and collectively they have 3 less defense but 6 more strength than my +7 shell pieces. However, I doubt that the difference is really worth going for unless you happen to have access to a full +8 chitin set (in which case the defensive loss might be too great).
Defense armors are so necessary it isn't funny. I used to think full shell warriors didn't need them. That's how I lost 1v1 to NYchris, I didn't put on my dagger helm. (For round 2, I did, and we fought until he ran out of pots and got intimate with the business end of my raptor. ) I carry spear, axe, sword, dagger, and club defense. How much of each depends on a number of factors. I tend to only really use it when I'm debuffed though, which is probably a weakness in my strategy that I should learn to address.