Skill eh? I wonder though, is it worth the time to raise a stat that has very little effect except in large quantity? It takes two level ups to gain a point in Crit rate, which by itself is negligible. Let's see, is it favorable to gain 10 levels for a grand total of 5% more crit rate?
I expect also you will sell all promotion items in favor of funds, and not wasting time promoting units. I know you get one guarenteed knight's crest, and I think you probably get a Orion's Bolt considering that you crash through chapter 6 with Seth. Hrm....methinks you might be able to use that to buy more killing weapons at the right Secret Shops (DOH, those come late in the game anyway), cause otherwise, you only get just a few...unless MAYBE you effectively abuse the control-enemy glitch.
Hah, it looks like you are actually going to have a very useful Syrene in this run when she's an otherwise completely worthless unit.
Yeah, I salute you for considering this game for a TAS. May it work out.