Knowing Planet X the spec will be more than adequate, I run one of their carbon road bikes and it's a beast, the spec was excellent for the price (IMHO).
It is a SRAM Apex drivetrain and they look very much like Avid BB series cable disc brakes, the finishing kit will be their own brand stuff (stem, bars etc) which is of decent quality, not sure on the wheel set or tyres, but again, I'm sure a quick email to them will answer any questions you have.
As far as drop bars go, they give you the advantage of being able to alter your body and hand position, while still retaining control, drops for speed, hoods for comfortable cruising and climbing and tops for sitting up and looking around, buy a drop bar bike with a set of interrupter levers and you can brake from the tops too.