PL for a Tank

[vraelliott]

I currently have a Human 11 Paladin/1 Fighter (DoS) that is pretty much stuck there. He has such poor DPS that it's not fun to play him. The build (based off Darkstar's Dark Knight) and I aren't really meshing. Granted, that build is certainly meant for end-game, which I haven't gotten to yet, but I have no desire to cap him as is. I want to get him to 20, get him a few completions and then TR him into some other melee build (probably Human DM'd Stalwart Defender, since I already made him the eChimera's Crown already), with the paladin PL.
So, I'm thinking of +3 LR'ing and turning him into a 12 Pally/6 Fighter/2 Monk KotC/Kensai, and am wondering how viable the following build is:

Leveling might not be ideal, but it has to fit around what I already have (1-8 Pally, 9F, 10-12 Pally)

1M
2-7P
8M
9-10F
11-16P
17-20F

Base Abilities (32 Point Build)
16 Strength (+5 Level-ups)
15 Dexterity
14 Constitution
8 Intelligence (I may have eaten a +1 Tome here already, if so I'll up this to 9)
10 Wisdom
14 Charisma

Feats:
1 - Toughness
1H - Power Attack
1M - TWF
3 - Kopesh
6 - iTWF
8M - Improved Sunder
9 - Toughness
9F - IC: Slashing
10F - WF: Slashing
12 - gTWF
15 - Stunning Blow
18 - Toughness
18F - WSpec: Slashing
20F - Shield Mastery (just in case I need to switch PrE's for tanking normal ToD's)

I should be able to get my Reflex save into the low 30's (not sure how useful it'll be but it can't be *worse* than no evasion.

How viable is this build for end game? The goal is a versatile and survivable DPS/Evasion toon. DPS is far from ideal, but I'm hoping it'll be "good enough" for Hard Raids (LoB, ToD) and the normal range of the easier epics.

Thoughts? Critiques? Suggestions? All are welcome.