When you say you "know youd be more comfortable with a trailer" how do you know? Personal experience, or a thought experiment?
Most people use steel touring bikes and panniers for a reason, but that said, you can use a carbon racing bike and trailer if you want to. the gearing will be wrong, the position will likely be uncomfortable for the long haul, and trailers are quite heavy. not to mention the plastic bike probably wont hold up to a very long trip...
for a one off tour of a few hundred miles, it would work, for multiple tours or a long trip (1-2-3k miles), you might want to give up any pretense of looking cool, and just get the best equipment for the job.
my 2c anyway.