We introduced RAA training to our GA school 5 yrs ago. We did so because we felt that RAA aircraft require a higher standard of hand/feet/eye coordination than traditional Piper and Cessna GA aircraft. Hence we could make better pilots.
At the same time we wanted to simplify the dead hand of bureaucracy, which was turning good practical pilots away from aviation because they could not pass the regulation-ridden CASA exams.
During training the RAA route is less expensive but as the instructor has to eat whether he flies GA or RAA then the difference is only 10-20%. The pay back occurs when the RAA pilot can fly solo almost anywhere in the country at 90% of the speed of the Piper for 1/2 price.
Although we find that nearly all our graduates end up flying with only 2 on board either as GA or RAA, many are seduced out of RAA into GA because "in GA you can take more than one Pax"
If you are SURE that you are learning to fly with a career in mind then perhaps you should go straight into GA. If you just want to experience the joy of flight, then save the money, save the frustration and, if it suits, make the transition to GA when you know a bit more about flying.