You have some good ninjas here if you want a team with roshi then you definitely want to trigger his combo so the team would really be based on combos. If you want to use the killerbee I recommend giving yagura two standards to trigger thirty combo something like this should work pretty well.

Looking at your ninjas though I would do something more like this:

On one other note the bee, roshi and DPB Hidan team is a personal favorite I recommend it, save up and buy the hidan if you can. Hes only around fourteen thousand coupons which you can save up in around three months.

when I really want to get a ninja I don't really like to rely on chance so I usually buy him from treasure of the sage the pricing is generally pretty good compared to other events. Best of luck to you.