pro tools set up?

[2ndgear]

Ive been offered a pro tools set up that consists of using my PT12 mac system with getting 2 x 192 interfaces
Its for my home studio that i have drums, guitars (mic the cab), bass (DI & Mic) set up all the time so full time there is 24 tracks in use.

My question is - do i need a desk or can i use everything in the box?
ie - i plug everything to the 192 and use protools to monitor, set up headphone mix, add plug ins preamps etc etc or would i be best getting a desk???