Best mods to use for clones?

cody needs to the fastest person in the battle, everyone else, even fives, need a crit damage set and a crit chance set, with the goal of having 40% cit chance...

Yes, give Cody speed. 5's will be going a lot, so give him damage. Sarge will also be a damage dealer. Try to get everybody to 40-50% crit chance, because you want all of them scoring crits when Cody calls the group attack, so the cooldown is reset.

Make Cody fast, make everyone else hit like a truck, got it. Also, if I add Princess Leia to the mix which clone do I give the boot to?

Rex is out for the HAAT if that's what you're asking.
As for mods Cody - 200+ speed at the very least. My damage went from 40-50% barely to 70%+ when I got his speed from 200 to 220.
Fives - Crit damage set with crit chance on Triangle and a Potency set with potency cross. Mods should preferably have crit chance on them.
Echo - Crit chance set + Crit damage set, Triangle with Crit chance on it, rest of the mods should preferably have crit chance secondaries. Arrow should be damage primary.
Sarge - Crit chance + Crit damage set, Triangle with crit damage, Arrow, Cross must be offense primary, the rest of the mods should have some crit chance and as much offense as you can stack.
Leia - Same as Sarge. You could maybe use a arrow with speed on her, but offense still works. Crit Damage on the Triangle, and get as much crit chance as you can. Cross must be offense . If you have a Zeta on her, circle can be Protection. If you don't have a Zeta, use Health as primary instead.

Nice thanks mate