Finally a solid list!! HUZZAH!
Good choice on the lootas, I think they make a great anti-elite infantry unit (STR 7, Shots D3). Your the only person I've seen who uses em' properly: ie. Lots of em'!
Good choice on giving your Kanz Kustom Mega Blasta's; their WS 3 may seem obvious but you wouldn't believe how many people over looks this somewhat large detail.
The one thing I would drop are the 'red paint' jobs and the big shootas on each of ur' Battlewagons, at the end of the day its only 1 inch and the shootas won't leave a big enough impact for their points. Instead of those I would definitely take boarding planks, these allow ur' boyz to assault in the same turn they bail out, which is huge value for the points...!
Oh and one last thing, if your hauling ur' boyz up da field in an armor 14 wagon, and assaulting da turn after, why did you take a zoggin Kustom Force Field
I'm just foolin' around, but if ur' boyz are getting 'stuck in' combat and you can't be shot at, then why take a KFF. No offense (I always rant people about KFF's) but I'm just thinking another 50 points could be put ta' better use, is all. Perhaps, to expand your squads of boyz, or add a trukk for your group of 11 boys, to follow into combat once your battlewagons have reached the enemy... do whatever you think is right though, I'm not sure of your style of play, so please don't make changes "cuz a told ya too"...
Anyways, good luck, now get out de're and stomp some oo'mans!