Overall you need some flakwagons and oddboys units (two essential ork bits).
If thats all you have (if you can list the models seperately might be able to squeeze out a bit more) I suggest using the big guns as boyz for now and going for something like.
500 points Big Mob (BTS)
Nobs 4
Boys 14
Grots 6
Kommandos 4
400 points Big Mob
Nobs 4
Boys 14
Grots 6
350 points Big Mob
Nobs 4
Boys 12
Grots 4
Stompa mob
How many stompas do you have? 4?
300 if 4, +75 each for more (NETEpic goes with 400 for 6 which is good).
200 points Fighter bombers 4
150 Stormboyz 6
225 Kult of speed, 6 bikes 3 scorcha
350 Huge Blitz brigade 12
2475 points and room for more

If you group the shokk attacks together (maybe 3 to a base) they could be oddboy unit upgrades but they are better going on the vehicles somehow (maybe use shokk attacks on empty hulls?).
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