To be honest, low points hurts bikers, esp. if you are forced to take minimum squads with no supporting elements.
That aside:
The Captain is a black hole, but you can't really get around it

.
The distribution of weapons on the bikers looks ok...there may be an issue with the ease of which you allow your opponent to decide their target priority.
But all in all, the opponent will have the same issues as your list, but bikers are known for not being cost effective with respect to the low model count even with their relative durability.
If you give anything to the Captain, I suggest a single lightning claw to make him actually lethal in combat.