Hm. Doing some playing around with caps and growth rates, i'm going to change mine to "depends on what class I end up choosing."
Grandmaster:
+Speed, - Strength
Growths: 80, 45, 50, 50, 60, 60, 35, 3o
Caps: 80, 37, 40, 41, 44, 47, 39, 40
Though I will be using mainly swords with this, I plan on going to Swordmaster first, getting the Sword Expert skill, then swapping back to Grandmaster. Going with magic or resistance lowers the speed stat, and I don't like that. Going with -Luck reduces strength and magic, as well as lowering my caps so that I have 39 in magic and strength. I have an OCD thing against the number nine (I always want it to go up one more) so I'd be bugged to death if I ever actually hit my cap in those stats.
Assassin:
+Speed, - Skill
Growths: 80, 55, 35, 60, 70, 60, 30, 25
Caps: 80, 39, 30, 47, 50, 47, 30, 30
Skill doesn't affect the speed, and before making it the worst stat it's 70, so that seems the best route to go. Strength sadly caps out at 39 but one stat is better than two, and I'd have to get lucky to reach that cap anyway, so...yeah.
My male unit, however, will more than likely be a swordmaster, though I haven't decided what his stat spread would be...