Giant Killer Build

[knittch]

I am creating a character for the campaign we are running and needed some advice. The character will be level 9 and the campaign is storming a city full of giants. I wanted to create a Dwarven Monk that specializes in taking down giants. I haven't rolled any of his stats yet (that will be this Friday) but I did want to make sure I'm on the right path for feats and abilities.

Alternate Racial Traits:
Giant Hunter (Rival Guide)
Lorekeeper
Magic Resistance
Rock Stepper (Rival Guide)

Archetype: Monk of the Sacred Mountain

Feats/Abilities
1st: Big Game Hunter (Rise of Ruin Lords)
1st: Improved Grapple (Monk Bonus)
2nd: Combat Reflexes (Monk Bonus)
2nd: Iron Monk (Alt Ability)
3rd: Power Attack
4th: Bastion Stance (Alt Ability)
5th: Earth Child Style
5th: Iron Limb Defense (Alt Ability)
6th: Improved Trip (Monk Bonus)
7th: Earth Child Topple
9th: Greater Trip
9th: Adamantine Monk (Alt Ability)
10th: Medusa's Wrath (Monk Bonus)
11th: Greater Grapple
13th: Dimensional Agility
14th: Mobility (Monk Bonus)
15th: Dimensional Assault
17th: Dimensional Dervish
17th: Vow of Silence (Alt Ability)
18th: Spring Attack (Monk Bonus)
19th: Dimensional Savant

Vow of Truth & Vow of Celibacy

Build Background: Character will be a mountain dwelling Dwarven monk that hunts lawless giants and lays the smackdown all while being stoic and stuff.

Questions I Have:
1. Would switching out Big Game Hunter for Defensive Combat Training be more beneficial?
2. Same thing with switching out Greater Grapple for Earth Child Binder; which would be more beneficial?
3. Is going down the dimension step route after 13th level a wise move?
4. Anything I am missing that can make this guy not just a giant's worst nightmare but other creature as well?

Thanks to anyone that responds. This is my first real post in the boards, but I have to I love what Paizo has done with this game.

[Bardic Dave]

Unfortunately, Combat Expertise is a requirement for Greater Trip, so you need to pick that up and have 13 Int. Taking Improved Trip as a bonus feat doesn't let you skip the pre-reqs for the greater version. I believe this was FAQed at some point.

[knittch]

Cool. That actually does help out a bunch. Since I can't take Greater Trip, that means Earth Child Binder is out of the question as well. Greater Grapple would go in at level 9 and maybe Defensive Combat Training goes in at level 11. It sucks I can't take Greater Trip without Combat Expertise, but thems the breaks.

[Bardic Dave]

If you're taking greater grapple, then you should totally take rapid grappler as well. One extra grapple check per round as a swift action.