Orks can shoot too! Let me know if you think this would work!
1
CAD
Big Mek x2
Bosspole
Shock Attack Gun
7 Lootas x2
5 Lobbas w/ 3 Ammo Runts
20 Shoota Boyz x2
2 Rokkits
1 Nob
Shoota,
BP, Big Choppa
Mini Mek x2
KMB
1 Deffkopta
TL rokkits
1 Deffkopta
TK rokkits
3 Warbuggies
TL rokkits
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Big Meks sit in with Lootas in cover and snipe all game
Lobba hide and ruin infantry's lives all game
Mini Meks go in w/ shoota boys. Use them as gate keepers, don't be in a rush to advance in normal ork fashion. I would try and find some ruins about 1/2 up the board and hunker down, shoot anything that comes close. Be prepared to take the brunt of the enemy's attack but remember you're buying time for the guns to do their work in the back. Use that Back line to soften the enemy up, force them to come closer or advance when they're weakened.
These 2 kind of serve the same purpose,
Deff Koptas be annoying all game. trying to pot shot back/side armor. Use them to force vehicles into certain spots where they wont have the clearest shots.
Warbuggys keep in reserve and bring them in once enemy has advanced. Outflank in and pot shot back armor, maybe swoop an open point