If you proceed through the booking process on the website, past the point of putting in a name and FFQ number, you reach a page with an exact fare breakout, listing all taxes, airport fees, fuel surcharges etc.. I'd print that out, together with the itinerary, and deliver it to the TA to ensure that they obtain exactly what you want.

Even if you follow wandering_fred's idea of having the TA "grab" the reservation from the AA RTW desk, it would be a good idea to print out this fare breakout page so that you ensure that everything by the TA has been done correctly. The final amount may differ by a few dollars more or less (due to FX differences between the time you put the itinerary on the oneworld website and the time the TA actually tickets), but you should be suspicious if there are material differences.