5 warriors can not take a splinter cannon, they have to be 10 strong to do that.
Your best bet is to go trueborn. mine was something like this:
5 Trueborn w/ 2 cannons, 3 blasters in dual cannon venom w/ nightshields
we were also allowed to give our models 3 USRs. Mine where relentless, slow and purposeful, and infiltrate. The first two went on the splinterborn to make sure they always fired 6 shots, and the last went on a random blasterborn for some close range tank killing.
Now you said you don't have a second cannon warrior, do you have a dark lance warrior??? you can put him in instead, just drop the cannon and a blaster, and you have the points for it.
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