I have always thought that, given that we baptize infants, that the other Sacraments (First Reconciliation, Confirmation, and First Holy Communion) should all be given in the same year, when the child is about ten years old. This is old enough to understand what is going on, without having reached an age of cynicism or outright rebellion, yet.
It could be done in the same way that Candidates for RCIA are received, with Sacramental Preparation taking place throughout the year, and then First Reconciliation during the period before the Initiation Mass, and then Confirmation and First Holy Communion at the Initiation Mass.
Or, it could be done in sequence, with First Reconciliation being completed during Advent, and then Confirmation and First Holy Communion being completed during the Lent/Easter period, with Confirmation occuring during April/May/June (depending upon the availability of the Bishop) and First Holy Communion taking place on Corpus Christi Sunday (assuming that Corpus Christi Sunday is after the date of Confirmation).