Hokay then. Some critique.
1. Drop the TL Shoota on your Warboss and take an Attack Squig.
2. If you're going to upgrade the weapons on your Nobs, Kombi-Skorcha is the way to go. But again, you'll want to prioritise wound allocation, like so:
Spoiler
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10 Nobs, Cyborks, Armour.
1. Slugga/Choppa.
2. Slugga/Choppa, Ammo Runt.
3. Choppa, Kombi-Skorcha.
4. Slugga/Choppa, Waaagh! Banner.
5. Painboy.
6. Slugga, Big Choppa.
7. Kombi-Skorcha, Big Choppa.
8. Power Klaw.
9. Power Klaw, Bosspole.
10. Power Klaw, Kombi-Skorcha.

Drop however many of them you need to make it fit your models.
3. 'Ard Boyz is an upgrade to the entire squad, not to individual models.
4. IMO, mobs of more than 20 Boyz should always be Shoota Boyz, and mobs of less than that should always be in transports. Take that as you will.
5. Deffkoptas are not very good, but since you have no Lootas they're probably the best anti-light vehicle you have. Get some Lootas instead.
6. Big Shootas on your Looted Wagon probably won't be doing much. I'd recommend getting rid of them.
7. Your Trukk upgrades probably aren't worth the points. Trukks are Fast anyway, so RPJ doesn't matter as much. Armour Plates only work 1/6 of the time, if that. Reinforced Ram is...unnecessary. If they fall back from your Tank Shock, you might not be able to assault them. Bad thing.
8. Grotzookas x2 should really be Grotzookas x3.