CX bike upgrade? Does this make sense?

Hi,

      I have a 7-8 year CX bike I have built up over time with a decent nice kit (Thompson post. Chris King BB and Headset, Rival Carbon cranks, Avid Ultimate Cantis). 

It seems like almost everyone is switching over to disk brakes, so it seems like it is time. Without getting a new frame I can only convert to disk brakes on the front (requires a new fork), but since most stopping power is from front brake anyway, this seems fine. My questions? 

Any real issue with running a front disk and rear canti break setup? 

Please help.
Thanks!
I didn't find the right solution from the Internet.
References:http://forum.slowtwitch.com/forum/Slowtwitch_Forums_C1/Triathlon_Fo...

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