Long Render (Timecode Window)...Any Short cuts??

I've got a feature length Documentary (1:24hrs)

I need to export a full length version of the film with a burned-in timecode window for the music composer.

I've got this set up. The problem is FinalCut wants to render the whole 1:24hrs with timecode & render all the effects.
This is about a 3 hour render.

Are there any shortcuts to adding a timecode window without having a gigantic render time?
Or do I just need to let the render sit overnight and do the export the next day?

(I'm working on a Mac 2 x 3GHz Quad-core Intel Xenon)