Get a frame that you can set up with your preferred riding position without going over the max amount of spacers (or having too long or short a stem).

Even if you want a racy position you may want a taller head tube and shorter top tube than normal, if you have long legs for your height.
If you're short then a 'race' gemoetry frame may have you in a "relaxed" position with the normal headset spacers.