Those standard rods I would probably suggest won't size up properly. ;-)
Jimmee is correct in saying that the standard rods are a reliable unit. It all comes down to tuning and regular maintenance.
I did see that Pauter from the US had 4ag and 7a rods on sale towards the end of last year for around the $600 mark.
Before you start purchasing all the rebuild parts, I highly recommend doing your research, and then doing more.