In terms of f2p lineups-wise, Sasuke - Kimimaro - ? is a pretty decent lineup especially towards end-game. So it would be nice if you can get their frags early on. '?' can be any ninja - some ninjas I've seen includes Jugo (for the shield it gives Kimi and Sasuke), Iruka (same as Jugo, with an added buff), Sailor Sakura (Debuff, healer) and Ningendo (Gives control and reflect to the team - also what I use ;P)
Most of these lineups would have Kimimaro in position 1, Lightning Main in position 2, ? in position 3 and Sasuke taking the last position.
In other words, one possible way of arranging them is:
X - X - X
Ssk - LM - Kimi
X - ? - X
More common talents are 2 3 ? 1 3 - "?" refers to whichever chase that complements your lineup. The most common summon seen with the lineup is the Serpent summon.
Note: Since you have root of warrior (ie immunity from debuffs), if you see someone that can interrupt/control you with position 1 ninjas, wait for their combo to trigger before clicking on your mystery round 2. Allows you to get your own combos off without being stopped by the position 1 ninja.