Ok, firstly... do the grots thing (kopters are useful and fun, but 4 is as fun as 6)
As to your bikers. they need cybork, they need a painboy so put that to rest.
They also need a bosspole (which is what you do for the wound allocation trick and your 5 points)
If you can fit 2 PK's in the squad (and 1 on the warboss) all the better, because the warboss can be directly targeted and may not get off any PK hits. But 1 is fine in a small squad
Use them to secondary charge with your trukk boyz and they will work a treat.
As to your bikers. they need cybork, they need a painboy so put that to rest.
They also need a bosspole (which is what you do for the wound allocation trick and your 5 points)
If you can fit 2 PK's in the squad (and 1 on the warboss) all the better, because the warboss can be directly targeted and may not get off any PK hits. But 1 is fine in a small squad
Use them to secondary charge with your trukk boyz and they will work a treat.