This is the best team i can think right now. I used this team for few months after treasure came out. You can replace Omoi with Darui later on,

But this team is outdated now. No matter what team you make Ay is really week now, With most of the people having Naruto,Kakuzu or Kushina you wont be able to do much.

Well i cant really tell you what to use. Because im not sure which team is better, In my opinion both are bad if i compare it with teams people use in my cluster, Im not sure how old is your server, How much power you have compared to top players on your server. And If your server is full of meta ninjas both teams cant really do much against them.

As for what ninjas you should go it really depends if you are full f2p or not. But i would suggest you to go for one of 3 ninjas. Kakuzu, Naruto 6paths or Kushina (red Hot).

For both Kakuzu and Naruto you need strong supports like edo itachi. So they are not the best choice to go as a f2p,

I would suggest you to go for Kushina, Easiest one to get as f2p. Almost every week you can get few frags for free, And you c*e some f2p supports like Iruka-Gaara kazekage to go with her,

The only problem is that you need both kushina and kakuzu 4 stars and almost full skillbreaks for them to work.