Maxe, The most commonly preferred combination used for STI road levers is what @
Doug64 has posted above. The Tiagra 9S group's FD works so well because the arc of the FD's cage more closely follows the smaller chain rings used on most touring rigs, the 5703 FD should work just as well. Depending on how much chain slack you expect to have, the 9S mountain bike RD could be the better choice, and would be my first choice FWIW.
While the ramps and pins on Shimano chain rings do assist shifting, they aren't, in practice, a requirement. Standard chain rings will work fine the great majority of the time, the Shimano does up shift more reliably under heavy torque IME.
Brad