As requested, it's review time.
Though firstly, I'd like to say that it's no bother at all doing these. So don't be afraid to ask.
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1/ Army Composition 9.5/10
Maxed out troops (literally) is a good thing. Ridiculously good, infact. Lots of scoring units, and for 2500pts it doesn't have too many Kill Points to give away. The Deffkoptaz and Big Gunz all work well together with the Boyz, and the KFF Mek is going to be invaluable. I think I'll be breaking out top marks here, if it wasn't for Ghazgkhull being here - he really slows down whatever unit he joins, and so lowers the overall synergy of the list.
2/ Unit Upgrades 8/10
Overall the upgrades are to the point and useful, but there are a few things I'd shuffle around. Like removing the Mek's 'eavy Armour and replacing it with Cybork Body (and taking Nob #6's armour as well to pay for it). Would have liked to have seen more Ammo Runts in the Gun Batteries as well, but points are tight and you don't want to be trimming Boyz off their Mobs. Rokkits would be my choice in the Boyz Mobz as well, but that would probably be overkill at this stage, so I'll wave over that point as a mere 'personal preference'.
3. Army Theme 7/10
Green Tide, enough said. One issue with the theme is that it's enherently Goff by having Ghaz as the leader, but it's got the Blood Axe themed Snikrot, large numbers of the Evil Sunz themed Deffkoptas and a number of (arguably) Deffskullz themed Big Gunz (not to mention various Klan colours on the Boyz). But it's only a minor thing, so I'm not going to be harsh about it. Shame there's no fleshed out background, but then you do have two special characters...
4/ Tactics Overview 9.5/10
You have a plan, and it's a good plan. Though I'm a little worried your 'send Ghaz through cover' idea may be a little rough around the edges. But then I think you probably know my feelings about him walking instead of being carted around in a Battlewagon (ahem). Ork KFF placement is good. Outflanking Deffkoptas and Ambushing Kommandos is good. Supportive fire from Kannons is good (though I'll add you should really put them into cover - a 4+ cover save will make them very hard to shift). Overall, excellent (with the minor Ghaz issue).
5. Army List Layout 9/10
Quite clear, everything is fine and dandy. Though abbrieviations do confuse a little at times.
Army Pictures 8/10
Finally, some pictures. Shame they are a bit out of focus. Still, full credit for having painted that many models, the army shot as a whole looks fantastic and intimidating! Get some close and in focus shots of your army centerpieces for additional points.
Oh, and +1pt simply for having a Nob with two Power Klaws. That thing looks very, very mean.
Total: 51/60 - Great List
With some minor refinement, as few clearer pictures and a little blurb about your army background, you'll probably hit close to the 'perfect list' mark. Very well done, and I wish you well in your tournament.
~Andromidius