That is hardly a meganob army.
Why don't you go the whole hog?
Warboss, mega-armour, boss pole
Warboss, mega-armour, boss pole
4 Meganobz, 2 c-skorcha, 1 c-rokkit
- Battlewagon, deff rolla, plank, big shoota
3 Meganobz, 1 c-skorcha, 1 c-rokkit
- Battlewagon, deff rolla, plank, big shoota
3 Meganobz, 1 c-skorcha
- Battlewagon, deff rolla, plank, big shoota
1000pts
Should work fairly well at 1000pts. Has to be one of the quickest and easiest ork armies to build too
If you want to keep closer to your original:
Warboss, mega-armour, bosspole
5 Meganobz, 3 c-skorcha, 1 c-rokkit
- Battlewagon, deff rolla, plank, big shoota, plates, riggers
18 Boyz, nob, claw, bosspole
- Battlewagon, deff rolla, plank, big shoota, riggers
17 Boyz, nob, claw, bosspole
- Battlewagon, deff rolla, plank, big shoota, riggers
1000pts
Trukks are pretty bad, they die from a stiff breeze. You will become accustomed to walking (and loosing) if you go with trukks.