I have yet to find a good build for this on site, so I am wondering what would make a good two weapon fighting samurai. Also, what orders would you take.
Stats:
Str 18
Dex 17
Con n/a
Int 13
wis 12
cha 17
Thanks guys
For starter's I don't think that a TWF samurai is going to be mechanically as strong as a two-handed one (at least until higher levels) but there might be some nice synergy with mounted archery. You'll want to check out the guides for the fighter and paladin equivalents. I would suggest choosing a human for race, since you'll need as many feats as you can get.
For the weapon training samurai class feature I would choose wakizashi as your favored weapon and generally plan on entering melee wielding a pair of wakizashi. A nice bonus is that you get Quick Draw for favored weapon which opens up a lot of switch-hitting options. When you're not dungeon crawling you'll be able to use your mount to good effect (with mounted archery (c.f. mounted archer class feature) and charging with a lance for double damage). When in more constrained areas you can still carry a (composite long) bow* (good for you since you'll have a higher dex to take TWF feats.
I would suggest taking Order of the Warrior. If your GM (mine does) uses the critical hit deck then you'll more or less get the critical focus chain for free and I would look to take improved critical and the dazzling display**/shatter defenses/deadly stroke chain (probably the best standard attack you'll get your hands on, CON bleed is evil). If your GM doesn't use the critical hit deck then the critical focus chain is worth considering since you get an additional +2 to confirm crits with your favored weapon (which has a high crit range already and you can use Way of the Samurai to have a really good shot at getting a crit threat, especially if you take Improved Critical).
1 Two weapon fighting
1H Weapon focus (wakizashi)
3 Double Slice
5 Weapon Specialization (wakizashi)
6S Improved two weapon fighting
7 Iron Will
9 Improved Critical (wakizashi)
11 Critical Focus
12S Sickening Critical
* Oddly, PF allows the use of composite long bow mounted as opposed to 3.5.
** Noticed that you've got a high CHA and no CON. Dazzling display works well with the high CHA but I couldn't help but wonder why no CON score is listed?