OPINION

So in Shackled City, using Pathfinder/3.5 rules, I am playing a Paladin/Fighter 2, Gray Guard/Fighter 1. I am a Suli that acquired the dragon born type as per 3.5 rules. My build is
Von Hohenhiem

STR 20
DEX 15
CON 17
INT 10
WIS 14
CHA 18
Traits are dual-born (cold/electricity) and Mark of the Beast
Flaw is Chivalrous
Level 1 feat
exotic weapon Prof (flying blade)
Two weapon fighting
Level 2 feat
Double Slice
Level 3 feat
Lighten weapon

When I became a dragonborn I chose to have a breath weapon.
Currently using piecemail heavy armor with AC of 10, Max DEX 3, -4 Check penalty. And yes I know dual wielding flying blades is far from optimal but my DM is letting me treat them as light weapons due to them being mythral and my feats. Saving up the gold to get them enchanted to lessen the penalties. Just want to know what people think of this guy here.

You have a 20, and 18 and a 17 in your stats, and your lowest stat is 10. You could make just about any conceivable build work with those. Stick to heavy armor, grab a belt of Physical Perfection when you can, never be stingy with your Lay On Hands to swift-action heal yourself, and you'll be fine.

Yeah gotta love rolling stats! Honestly I was wondering if there is anyway to maximize use of my breath weapon and if wordcasting would be a good idea

Well, you already hit on the obvious weakness that I would have pointed out, at least for your level.

You have absolutely awesome stats though...so for that character probably not as big a deal as with others.

It also sounds intentional and what you wanted, so not a problem there for you either.

Where you want to go next probably depends on what you want the character to be.

If your GM is allowing 3.5 material, there are metabreath feats that are similar to metamagic but work on your breath weapon. I think they are in the Draconomicon.

Yes all 3.5 material is allowed which I wish I knew sooner but its cool. I love just the appeal of slinging chains and blades around and with heroforge up it looks even cooler. Any advice on wordcasting?

Its a 1-20+ game and I want him to run massive damage slinging 2 flying blades

Wordcasting is fun, but poorly supported (unfortunately). This makes it a bit messy to use, in my experience. Your versatility will be much lower as well (compared to a standard caster) due to the lack of word options.

That is disappointing I was liking the idea of buff/heal in the same spell

On a different note is their a better way to get the twf?