The box stock Sakura S will be just right for a beginner. However, since I am assuming that it will be driven by a "beginner" - expect some broken parts to come up as the driver tries the feel of driving it around the track (most pros will eventually break some parts in their top notch car also). Upgrading is just an option for the driver - if he considered it as "option".
Now, regarding the issue of buying a full Sakura Zero as against the Sakura "S" with an upgrade, I guess (for me) upgrading the "S" is most economical.
Since you are in Asia, part availability will be a breeze. Some of the items may be out of stock, but they eventually re-stock them with no hassles.
Here you go Dude...
Aluminum Bulkheads, Steering and Suspension Mounts (Front and Rear) at total of US$77.16:
(3R-SAK-32/PK) 3Racing Rear Bulkhead
(3R-SAK-15/PK) 3Racing Suspension Mount FF-0
(3R-SAK-17/PK) 3Racing Suspension Mount FR-0
(3R-SAK-18/PK) 3Racing Suspension Mount RF-0
(3R-SAK-23/PK) 3Racing Suspension Mount RR+30 (RR3 Degree)
(3R-SAK-10/PK) 3Racing Steering System Aluminum
Additional Spares (Front and Rear) at total of US$31.41
(3R-SAK-41) 3Racing Upright
(3R-SAK-26M) 3Racing Rear Suspension Arm
(3R-SAK-43) 3Racing Front C Hub 4 degree
(3R-SAK-25M) 3Racing Front Suspension Arm
(3R-SAK-44) 3Racing Knuckle Arms
(3R-SAK-42) 3Racing King Pin Post
Optional Upgrades at total of US$76.90
(3R-SAK-48/PK) 3Racing Aluminum Oil Damper Set
(3R-SAK-13B/WO) 3Racing Graphite Main Chassis 2.25mm (Narrow)
(3R-SAK-40E) 3Racing Universal Shaft 44mm Steel
Summing it all up:
Sakura Zero "S" kit @ US $102.00 plus the total of the above mentioned list, your upgraded car will be US $287.47 and still end up with a few plastic spares as well.
You can even buy the spares for the front and rear gear differentials and still end up lower than the street price of the full Sakura Zero.
