lfbb, As you say, for a standard GA, Airbus do of course recommend retracting the flaps one step with application of TOGA for the A320/1.
Also consider though, the overweight landing checklist in the QRH, which leads you to a table to compare Airport elevation and OAT versus Aircraft weight. If you exceed a given weight for the environmental conditions for the day, the QRH instructs you to make a Flap 3 landing and use CONF 1+F for any GA i.e 2 steps up.