All you really need is a the Saracen infantry. Muwahid Foot Soldiers can get you in trouble especially against heavy cavalry or camels (they don't have enough soldiers and they don't hold very long). Saracen infantry however, is durable.

If you want a flanker, just put the Gazi Infantry on wedge. If you are really short on flankers, put futuwwa on wedge (however advisable only as a last resort and rarely a need for it ever arises.)