Reply to Sending Midi Clock with a Macbook and No Audio 8

I just got Traktor Scratch Duo pack that comes with Audio 4. This is fine for my needs but I sometimes do back to back sets with a friend that uses and all Ableton 8 setup.

I was wondering if the following is possible to keep Traktor and Ableton in Sync for B2B sets.

1. Upgrade to Traktor Scratch Pro for Midi clock functionality.
2. Purchase a midi to USB cable and a USB hub (Macbook has 2 USB sockets - Need 1 for Audio 4 and other for nocturn, hub would be used for Nocturn and Midi cable)
3. Follow steps to sync programs.

I have literally just bought Traktor and don't want to upgrade Audio 8 straight away until I get used to software or see if a new controller/soundcard like Xone 2d comes out in 2010.

Would the above solution work ?