Gt Grade for amateur cx race?

Hi,

      I have round 2 of my local summer cx series coming up. Last week was my 1st ever go so i did it on my full sus; my only other bike is a carbon grade 105. This time round though i dont want to be lumbering round; but am worried that my grade will be too fragile (p.s i have a set of cx tires to put on so thats no issue, and it has a 36t inner ring which will do me).

I suppose the other thing i am thinking is, even if i put the cx tires on it i will still have to run fairly high pressures as they are clinchers, so the comfort aspect and the grip might be awful.

Thoughts?

Please help.
Thanks!
I didn't find the right solution from the Internet.
References:http://road.cc/content/forum/189968-gt-grade-amateur-cx-race

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