Character Customization (Wrestling Game)

Am looking forward in creating a wrestling game…
Would love to have some suggestions, tips and some relevant stuff…
I would like to start of with the create a wrestler section…
I studied the character customization tut from Unity & I’m good to go…
I’m currently modeling a basic mesh for the base model of caw in 3DSMax…
I want to have a lot of customize option’s like hair styles, t-shirt’s etc…
I want to know how and what format to export the model…
Example, If have the base character, And a couple of T-Shirts for him
Should i export the Character, T-Shirt No.1, T-Shirt No.2 as separate object’s Or as the same object…
So i would like to get some suggestion’s on this…
Thanks in advance…

Regards,Nik-60

It is working like a charm, Thanks Ben…
Have not figured out a way to use object pools yet…

Regards,Nik-60